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  <div class="headertitle"><div class="title">native_socket_stream_impl.cpp</div></div>
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<a href="sync__io_2detail_2native__socket__stream__impl_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/* Flow-IPC: Core</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment"> * Copyright 2023 Akamai Technologies, Inc.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> *</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> * Licensed under the Apache License, Version 2.0 (the</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> * &quot;License&quot;); you may not use this file except in</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> * compliance with the License.  You may obtain a copy</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> * of the License at</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"> *</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"> *   https://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment"> *</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"> * Unless required by applicable law or agreed to in</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment"> * writing, software distributed under the License is</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment"> * distributed on an &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment"> * CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment"> * See the License for the specific language governing</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"> * permissions and limitations under the License. */</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment"></span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment">/// @file</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment"></span><span class="preprocessor">#include &quot;<a class="code" href="sync__io_2detail_2native__socket__stream__impl_8hpp.html">ipc/transport/sync_io/detail/native_socket_stream_impl.hpp</a>&quot;</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="preprocessor">#include &quot;<a class="code" href="ipc__core_2src_2ipc_2transport_2error_8hpp.html">ipc/transport/error.hpp</a>&quot;</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="preprocessor">#include &lt;boost/move/make_unique.hpp&gt;</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="preprocessor">#include &lt;cstddef&gt;</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceipc_1_1transport_1_1sync__io.html">ipc::transport::sync_io</a></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span>{</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="comment">// Initializers.</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span><span class="keyword">const</span> <a class="code hl_typedef" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a881c376f1ee37f9b1a20f770824f55d9">Native_socket_stream::Impl::low_lvl_payload_blob_length_t</a></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span>  <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ad5e487595e2a58f7ff25b4f4c91fe4bc">Native_socket_stream::Impl::S_META_BLOB_LENGTH_PING_SENTINEL</a></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span>    = std::numeric_limits&lt;low_lvl_payload_blob_length_t&gt;::max();</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="keyword">const</span> <span class="keywordtype">size_t</span> <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a7b825476c04ea53eccea862d34f830c6">Native_socket_stream::Impl::S_MAX_META_BLOB_LENGTH</a></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span>  = S_META_BLOB_LENGTH_PING_SENTINEL - 1;</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="comment">// Implementations (but main methods, ::rcv_*() and ::snd_*() + APIs are in diff .cpp file).</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span> </div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="comment">// Delegated ctor skips setting up m_peer_socket, not knowing whether we&#39;ll start in NULL or PEER state.</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ae43a7982c98b4eb6501e7f74f3f6fa04">   38</a></span><a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ae9194e2eefe81185d1bf067b1f934657">Native_socket_stream::Impl::Impl</a>(flow::log::Logger* logger_ptr, <a class="code hl_typedef" href="namespaceipc_1_1util.html#ae6ac47812a90d1287c61e0b7de7bc4f5">util::String_view</a> nickname_str, std::nullptr_t) :</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span>  flow::log::Log_context(logger_ptr, <a class="code hl_enumeration" href="namespaceipc.html#a4ccdeed058222c635745a4dc830e99f7">Log_component</a>::S_TRANSPORT),</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span>  m_nickname(nickname_str),</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span>  m_state(<a class="code hl_enumeration" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a9c9825f74472868eb1397c33edf78fb4">State</a>::S_NULL),</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span>  m_protocol_negotiator(get_logger(), nickname(),</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span>                        1, 1), <span class="comment">// Initial protocol!  @todo Magic-number `const`(s), particularly if/when v2 exists.</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span>  m_ev_wait_hndl_peer_socket(m_ev_hndl_task_engine_unused), <span class="comment">// This needs to be .assign()ed still, at least.</span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span>  m_timer_worker(get_logger(),</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span>                 <span class="comment">// Brief-ish for use in OS thread names or some such.</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span>                 flow::util::ostream_op_string(<span class="stringliteral">&quot;SckS-&quot;</span>, m_nickname)),</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span>  m_snd_finished(false),</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span>  m_snd_auto_ping_period(util::<a class="code hl_typedef" href="namespaceipc_1_1util.html#ac66141280c3b7295a86b65209f31cc58">Fine_duration</a>::zero()), <span class="comment">// auto_ping() not yet called.</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span>  m_snd_auto_ping_timer(m_timer_worker.create_timer()), <span class="comment">// Inactive timer (auto_ping() not yet called).</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span>  <span class="comment">/* If it does become active, we&#39;ll use this readable-pipe-peer to get informed by m_timer_worker that</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span><span class="comment">   * m_snd_auto_ping_timer has fired.  That way we can use m_snd_ev_wait_func() mechanism to have user</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span><span class="comment">   * ferry timer firings to us. */</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span>  m_snd_auto_ping_timer_fired_peer(m_timer_worker.create_timer_signal_pipe()),</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span>  <span class="comment">// And this is its watchee mirror for outside event loop (sync_io pattern).</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span>  m_snd_ev_wait_hndl_auto_ping_timer_fired_peer</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>    (m_ev_hndl_task_engine_unused,</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span>     <a class="code hl_struct" href="structipc_1_1util_1_1Native__handle.html">Native_handle</a>(m_snd_auto_ping_timer_fired_peer-&gt;native_handle())),</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span> </div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>  m_rcv_idle_timeout(util::<a class="code hl_typedef" href="namespaceipc_1_1util.html#ac66141280c3b7295a86b65209f31cc58">Fine_duration</a>::zero()), <span class="comment">// idle_timer_run() not yet called.</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>  m_rcv_idle_timer(m_timer_worker.create_timer()), <span class="comment">// Inactive timer (idle_timer_run() not yet called).</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>  m_rcv_idle_timer_fired_peer(m_timer_worker.create_timer_signal_pipe()), <span class="comment">// Analogous to above.</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span>  m_rcv_ev_wait_hndl_idle_timer_fired_peer <span class="comment">// Analogous to above.</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span>    (m_ev_hndl_task_engine_unused,</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>     <a class="code hl_struct" href="structipc_1_1util_1_1Native__handle.html">Native_handle</a>(m_rcv_idle_timer_fired_peer-&gt;native_handle()))</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>{</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span>  <span class="comment">// m_*peer_socket essentially uninitialized for now; delegating ctor sets them up.</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span>}</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span> </div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ae9194e2eefe81185d1bf067b1f934657">   70</a></span><a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ae9194e2eefe81185d1bf067b1f934657">Native_socket_stream::Impl::Impl</a>(flow::log::Logger* logger_ptr, <a class="code hl_typedef" href="namespaceipc_1_1util.html#ae6ac47812a90d1287c61e0b7de7bc4f5">util::String_view</a> nickname_str) :</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>  <a class="code hl_class" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html">Impl</a>(logger_ptr, nickname_str, nullptr)</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>{</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>  <span class="keyword">using </span><a class="code hl_class" href="classipc_1_1util_1_1sync__io_1_1Asio__waitable__native__handle.html">util::sync_io::Asio_waitable_native_handle</a>;</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>  <span class="keyword">using </span><a class="code hl_typedef" href="namespaceipc_1_1util_1_1sync__io.html#ac6973c71fc70c6d867b0f2255c642532">util::sync_io::Task_ptr</a>;</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span>  <span class="keyword">using </span>flow::util::ostream_op_string;</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>  <span class="keyword">using </span>std::string;</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span> </div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span>  FLOW_LOG_INFO(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: In NULL state: Started timer thread.  Otherwise inactive.&quot;</span>);</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span> </div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>  <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a42aab631e9c70bfaa53764309adfe37c">m_peer_socket</a></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>    = boost::movelib::make_unique&lt;asio_local_stream_socket::Peer_socket&gt;</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>        (<a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a1caa342f726a273deb64317cbec8b5ea">m_nb_task_engine</a>, <span class="comment">// See its doc header if you&#39;re wondering about `_unused`.</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>         <span class="comment">// Needs to be is_open() (hold an FD) -- see our doc header.  This arg makes it happen (omit =&gt; no FD).</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>         asio_local_stream_socket::local_ns::stream_protocol());</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span>  <span class="comment">// This &quot;needs to be .assign()ed still.&quot;</span></div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span>  <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a0ac6a82eda9256cba45f3b5365d79355">m_ev_wait_hndl_peer_socket</a>.<a class="code hl_function" href="classipc_1_1util_1_1sync__io_1_1Asio__waitable__native__handle.html#a7d28277f9ef090032b0483c65f79f23c">assign</a>(<a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a42aab631e9c70bfaa53764309adfe37c">m_peer_socket</a>-&gt;native_handle());</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span> </div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span>  <span class="comment">/* Last thing is, in NULL state, we need to prep the *connect() machinery.  As discussed in our class doc header,</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span><span class="comment">   * the public API exposed is sync_connect(), whereas the following are private and used by sync_connect() internally:</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span><span class="comment">   *   -1- connect-ops counterpart of what replace_event_wait_handles() does for send-ops and receive-ops,</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span><span class="comment">   *       without conflicting with user call to replace_event_wait_handles() which can happen anytime independently;</span></div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span><span class="comment">   *   -2- start_connect_ops();</span></div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span><span class="comment">   *   -3- async_connect().</span></div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span><span class="comment">   *</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span><span class="comment">   * We do -1- and -2- below.  -3- happens inside sync_connect() as needed.  */</span></div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span> </div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span>  <span class="comment">// Create the single-thread loop object, but do not -&gt;start() thread yet (see sync_connect() as to why not).</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>  <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ae094bf64dda8f6c6e013400a77fd1343">m_conn_async_worker</a>.emplace(<a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream.html#aac68d14f4ef33505399df4fd04cd4669">get_logger</a>(), ostream_op_string(<span class="stringliteral">&quot;SckC-&quot;</span>, <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a0ddd1b1e57bc61827d457e16e3db8600">nickname</a>()));</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span> </div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>  <span class="comment">// -1- replace_event_wait_handles() counterpart.  To avoid conflict, use separate guy from m_ev_wait_hndl_peer_socket.</span></div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span>  <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#aa2d79438a470aa94feb2fbbcd72dc629">m_conn_ev_wait_hndl_peer_socket</a>.emplace(*(<a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ae094bf64dda8f6c6e013400a77fd1343">m_conn_async_worker</a>-&gt;task_engine()),</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span>                                          <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a42aab631e9c70bfaa53764309adfe37c">m_peer_socket</a>-&gt;native_handle());</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span> </div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span>  <span class="comment">/* -2- start_connect_ops(): We&#39;ll give it our -&gt;async_wait() machinery associated with m_conn_async_worker thread.</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span><span class="comment">   * (Note it is fine if the thread is not -&gt;start()ed now or even during the async-wait: the async-wait will</span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span><span class="comment">   * execute as soon as the thread does start.)</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span><span class="comment">   *</span></div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span><span class="comment">   * This is much like, e.g., Async_adapter_sender ctor does for send-ops.</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="comment">   *</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span><span class="comment">   * (If you&#39;re wondering why we set it up like this with a formal sync_io-pattern flow, as opposed to just</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span><span class="comment">   * having async_connect() do m_conn_ev_wait_hndl_peer_socket-&gt;async_wait() directly, and so on:</span></div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span><span class="comment">   * Class doc header &quot;Connect-ops impl design&quot; section explains it the rationale.  TL;DR: It is for an easier</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span><span class="comment">   * transition for when some form of `*this` is network-enabled, and hence async_connect() would become potentially</span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span><span class="comment">   * not-instant and made public, along with start_connect_ops().) */</span></div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span>  <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a3c6214376ab8bc59823635d405f9704a">start_connect_ops</a>([<span class="keyword">this</span>](Asio_waitable_native_handle* hndl_of_interest, <span class="keywordtype">bool</span> ev_of_interest_snd_else_rcv,</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span>                           <a class="code hl_typedef" href="namespaceipc_1_1util_1_1sync__io.html#ac6973c71fc70c6d867b0f2255c642532">Task_ptr</a>&amp;&amp; on_active_ev_func)</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span>  {</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span>    FLOW_LOG_TRACE(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Sync-IO connect-ops event-wait request: &quot;</span></div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span>                   <span class="stringliteral">&quot;descriptor [&quot;</span> &lt;&lt; <a class="code hl_typedef" href="namespaceipc_1_1transport.html#a7ee4551983d9df16ec16a3139bac50e8">Native_handle</a>(hndl_of_interest-&gt;native_handle()) &lt;&lt; <span class="stringliteral">&quot;], &quot;</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span>                   <span class="stringliteral">&quot;writable-else-readable [&quot;</span> &lt;&lt; ev_of_interest_snd_else_rcv &lt;&lt; <span class="stringliteral">&quot;].&quot;</span>);</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span> </div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span>    <span class="comment">// They want this async_wait().  Oblige.</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span>    assert(hndl_of_interest);</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span>    hndl_of_interest-&gt;async_wait(ev_of_interest_snd_else_rcv</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span>                                   ? Asio_waitable_native_handle::Base::wait_write</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span>                                   : Asio_waitable_native_handle::Base::wait_read,</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span>                                 [on_active_ev_func = std::move(on_active_ev_func)]</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span>                                   (<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>&amp; err_code)</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span>    {</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span>      <span class="comment">// We are in m_conn_async_worker thread.  Nothing is locked.</span></div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span> </div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span>      <span class="keywordflow">if</span> (err_code == boost::asio::error::operation_aborted)</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span>      {</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span>        <span class="keywordflow">return</span>; <span class="comment">// Stuff is shutting down.  GTFO.</span></div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span>      }</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span>      <span class="comment">// else</span></div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span> </div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span>      <span class="comment">// They want to know about completed async_wait().  Oblige.</span></div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span>      <span class="comment">/* Inform Impl *this of the event.  This can (indeed will for sure, in our case, since: writable socket =&gt;</span></div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span><span class="comment">       * connect completed) synchronously invoke handler we have registered via our this-&gt;async_connect() call</span></div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span><span class="comment">       * in sync_connect(). */</span></div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span> </div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span>      (*on_active_ev_func)();</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span>    }); <span class="comment">// hndl_of_interest-&gt;async_wait()</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span>  }); <span class="comment">// start_connect_ops()</span></div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span>} <span class="comment">// Native_socket_stream::Impl::Impl()</span></div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span> </div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a90f29990e2e88052232c218c076414c7">  149</a></span><a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ae9194e2eefe81185d1bf067b1f934657">Native_socket_stream::Impl::Impl</a>(flow::log::Logger* logger_ptr, <a class="code hl_typedef" href="namespaceipc_1_1util.html#ae6ac47812a90d1287c61e0b7de7bc4f5">util::String_view</a> nickname_str,</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span>                                 <a class="code hl_struct" href="structipc_1_1util_1_1Native__handle.html">Native_handle</a>&amp;&amp; native_peer_socket_moved) :</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span>  <a class="code hl_class" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html">Impl</a>(logger_ptr, nickname_str, nullptr)</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span>{</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span>  <span class="keyword">using </span><a class="code hl_typedef" href="namespaceipc_1_1transport_1_1asio__local__stream__socket.html#a1788f9dbd896bb71b3693f9ae25b40ae">asio_local_stream_socket::Peer_socket</a>;</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span> </div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span>  FLOW_LOG_INFO(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Immediately in PEER state: &quot;</span></div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span>                <span class="stringliteral">&quot;Taking over native peer socket [&quot;</span> &lt;&lt; native_peer_socket_moved &lt;&lt; <span class="stringliteral">&quot;] which is connected &quot;</span></div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span>                <span class="stringliteral">&quot;and likely either just accepted or comes from local connect_pair().&quot;</span>);</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span> </div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span>  <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a64e47a38b3ed59e37295336114918142">m_state</a> = <a class="code hl_enumvalue" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a9c9825f74472868eb1397c33edf78fb4ad9a05d721258c584cd559c56fd035887">State::S_PEER</a>;</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span> </div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span>  <span class="comment">/* Same deal as in NULL-state ctor above, except subsume the pre-connected Native_handle, and</span></div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span><span class="comment">   * m_ev_wait_hndl_peer_socket is already associated with m_ev_hndl_task_engine_unused, so</span></div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span><span class="comment">   * we just .assign() (&quot;this needs to be .assign()ed still&quot;). */</span></div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span> </div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span>  <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a42aab631e9c70bfaa53764309adfe37c">m_peer_socket</a></div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span>    = boost::movelib::make_unique&lt;asio_local_stream_socket::Peer_socket&gt;</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span>        (<a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a1caa342f726a273deb64317cbec8b5ea">m_nb_task_engine</a>,</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span>         asio_local_stream_socket::local_ns::stream_protocol(),</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span>         native_peer_socket_moved.m_native_handle);</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span>  <a class="code hl_variable" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a0ac6a82eda9256cba45f3b5365d79355">m_ev_wait_hndl_peer_socket</a>.<a class="code hl_function" href="classipc_1_1util_1_1sync__io_1_1Asio__waitable__native__handle.html#a7d28277f9ef090032b0483c65f79f23c">assign</a>(native_peer_socket_moved.m_native_handle);</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span> </div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span>  <span class="comment">// Clear it; we&#39;ve eaten it.</span></div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span>  native_peer_socket_moved = <a class="code hl_typedef" href="namespaceipc_1_1transport.html#a7ee4551983d9df16ec16a3139bac50e8">Native_handle</a>();</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span>} <span class="comment">// Native_socket_stream::Impl::Impl()</span></div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span> </div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#adeb067b178e7688dde0ca7c5eb877b1d">  176</a></span><a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#adeb067b178e7688dde0ca7c5eb877b1d">Native_socket_stream::Impl::~Impl</a>()</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span>{</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span>  FLOW_LOG_INFO(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Shutting down.  Next peer socket will close if open; &quot;</span></div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span>                <span class="stringliteral">&quot;and that is it.  They simply cannot advance our state machine via on_active_ev_func()s we &quot;</span></div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span>                <span class="stringliteral">&quot;handed out.&quot;</span>);</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span>}</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span> </div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a3c6214376ab8bc59823635d405f9704a">  183</a></span><span class="keywordtype">bool</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a3c6214376ab8bc59823635d405f9704a">Native_socket_stream::Impl::start_connect_ops</a>(<a class="code hl_typedef" href="namespaceipc_1_1util_1_1sync__io.html#aa0b9a3cc6bdc7dedbef4f9e06851aa24">util::sync_io::Event_wait_func</a>&amp;&amp; ev_wait_func)</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span>{</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span>  <span class="keywordflow">return</span> start_ops&lt;Op::S_CONN&gt;(std::move(ev_wait_func));</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span>}</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span> </div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a3c5187e34876a0419ff70734ec0fbf14">  188</a></span><span class="keywordtype">bool</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a3c5187e34876a0419ff70734ec0fbf14">Native_socket_stream::Impl::sync_connect</a>(<span class="keyword">const</span> <a class="code hl_class" href="classipc_1_1util_1_1Shared__name.html">Shared_name</a>&amp; absolute_name, <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>* err_code)</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span>{</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span>  <span class="keyword">using </span><a class="code hl_class" href="classipc_1_1util_1_1sync__io_1_1Asio__waitable__native__handle.html">util::sync_io::Asio_waitable_native_handle</a>;</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span>  <span class="keyword">using </span>flow::async::reset_this_thread_pinning;</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span>  <span class="keyword">using </span>boost::promise;</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span> </div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span>  FLOW_ERROR_EXEC_AND_THROW_ON_ERROR(<span class="keywordtype">bool</span>, <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream.html#a2e22d55369f5bd67a4e0d277b73f2823">sync_connect</a>, absolute_name, _1);</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span>  <span class="comment">// ^-- Call ourselves and return if err_code is null.  If got to present line, err_code is not null.</span></div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span> </div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span>  <span class="comment">/* Please see &quot;Connect-ops impl design&quot; in class doc header for background.  Long story short, though:</span></div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span><span class="comment">   * we do async_connect() which will usually complete synchronously; if not then we start a very short-lived</span></div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span><span class="comment">   * thread for the duration of the still-quick-but-asynchronous async_connect(), and we stop it once done</span></div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span><span class="comment">   * (use a promise-future pair to signal back to the user&#39;s calling thread).</span></div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span><span class="comment">   * Either way we will have a synchronous result in *err_code shortly. */</span></div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span> </div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span>  <span class="keywordflow">if</span> (m_state != State::S_NULL)</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span>  {</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span>    FLOW_LOG_WARNING(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Wanted to connect to [&quot;</span> &lt;&lt; absolute_name &lt;&lt; <span class="stringliteral">&quot;] &quot;</span></div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span>                     <span class="stringliteral">&quot;but already not in NULL state.  Ignoring.&quot;</span>);</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span>    <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span>  }</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span>  <span class="comment">// else</span></div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span>  assert(op_started&lt;Op::S_CONN&gt;(<span class="stringliteral">&quot;sync_connect&quot;</span>));</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span> </div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span>  promise&lt;void&gt; done_promise;</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span>  async_connect(absolute_name, err_code, [&amp;](<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>&amp; async_err_code)</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span>  {</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span>    <span class="comment">// We are in m_conn_async_worker (short-lived) thread.</span></div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span> </div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span>    <span class="comment">/* async_connect() yielded SYNC_IO_WOULD_BLOCK after issuing m_conn_ev_wait_hndl_peer_socket-&gt;async_wait();</span></div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span><span class="comment">     * we detected that below and are now dutifully blocking (for a very short time) until the promise is fulfilled.</span></div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span><span class="comment">     * So fulfill it: */</span></div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span>    *err_code = async_err_code;</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span>    done_promise.set_value();</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span>  });</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span> </div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span>  <span class="keywordflow">if</span> (*err_code == <a class="code hl_enumvalue" href="namespaceipc_1_1transport_1_1error.html#adfef15ef4e76cc55d652fbd9c2797297aa667487757f9d6300f6888bac40bcc24">error::Code::S_SYNC_IO_WOULD_BLOCK</a>)</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span>  {</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span>    <span class="comment">/* m_conn_ev_wait_func() has been invoked, meaning there&#39;s an .async_wait() pending on m_conn_async_worker.</span></div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span><span class="comment">     * We have not yet started the actual thread though; this is 100% allowed by boost.asio and consequently</span></div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span><span class="comment">     * (and formally by its contract) Single_thread_task_loop.  Now we do need to start it though.</span></div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span><span class="comment">     *</span></div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span><span class="comment">     * We don&#39;t m_conn_async_worker-&gt;start() in ctor, so we do it here -- and we will also .stop() it at the end.</span></div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span><span class="comment">     * Rationale: We&#39;d like to keep ourselves as perf-light-weight as is reasonably possible; as in particular</span></div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span><span class="comment">     * the NULL-state ctor might be being invoked from transport::[sync_io::]Native_socket_stream default ctor,</span></div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span><span class="comment">     * as (and this is a common scenario) the target of Native_socket_stream_acceptor::async_accept(), which</span></div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span><span class="comment">     * will destroy *this Impl by move-assigning onto it via our pImpl setup.  Having a thread start+stop/join occur</span></div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span><span class="comment">     * in an essentially blank-forever *this is unnecessarily heavy.  The trade-off is that sync_connect() is</span></div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span><span class="comment">     * framed by a thread stop/start.  However this is very confidently doable in under 1 millisecond total; and we</span></div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span><span class="comment">     * consider this a small price given the expected frequency of sync_connect()s in reality, plus the</span></div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span><span class="comment">     * operations that will run in this thread (not that those are heavy either).  Basically thread start+stop/join</span></div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span><span class="comment">     * inside sync_connect() is unlikely to bother anyone, whereas a thread start+stop/join in an object whose</span></div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span><span class="comment">     * purpose is to merely be overwritten via move-assign = obnoxious.</span></div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span><span class="comment">     *</span></div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span><span class="comment">     * Furthermore!!!  All of the above holds, yes, but it&#39;s even nicer than that: async_connect(), per sync_io pattern,</span></div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span><span class="comment">     * can yield immediate, synchronous success or failure; then we do not even need any thread.  Not only that,</span></div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span><span class="comment">     * but if you look inside you&#39;ll see we say this is by far likelier than the converse.  (@todo Maybe we shouldn&#39;t</span></div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span><span class="comment">     * even create m_conn_async_worker at all, unless we know we need to start the thread?  It&#39;s probably OK as-is;</span></div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span><span class="comment">     * probably the thread start/join is the heaviest aspect of all this, and if we typically avoid that, we&#39;ve done</span></div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span><span class="comment">     * fine.  Revisit sometime though.  It&#39;d just make m_conn_ev_wait_hndl_peer_socket lifecycle more complicated.) */</span></div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno">  248</span>    m_conn_async_worker-&gt;start(reset_this_thread_pinning);</div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span>    <span class="comment">// Don&#39;t inherit any strange core-affinity!  ^-- Worker must float free.</span></div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span> </div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span>    <span class="comment">// And now we wait (for a very short time).</span></div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno">  252</span>    done_promise.get_future().wait();</div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span> </div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno">  254</span>    assert((*err_code != <a class="code hl_enumvalue" href="namespaceipc_1_1transport_1_1error.html#adfef15ef4e76cc55d652fbd9c2797297aa667487757f9d6300f6888bac40bcc24">error::Code::S_SYNC_IO_WOULD_BLOCK</a>)</div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span>           &amp;&amp; <span class="stringliteral">&quot;Handler to async_connect() should&#39;ve set *err_code, and async_connect() must never issue would-block &quot;</span></div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span>                <span class="stringliteral">&quot;except synchronously.&quot;</span>);</div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span> </div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span>    m_conn_async_worker-&gt;stop(); <span class="comment">// Stop/join thread until next sync_connect() attempt if any (PEER state? then never).</span></div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span>  }</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span>  <span class="comment">/* else if (*err_code == SYNC_IO_WOULD_BLOCK)</span></div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span><span class="comment">   * {</span></div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno">  262</span><span class="comment">   *   Delightful (and very likely): It either sync-failed or sync-succeeded.  The handler won&#39;t be called.  Done:</span></div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span><span class="comment">   *   Fall-through.</span></div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span><span class="comment">   * } */</span></div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span> </div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno">  266</span>  <span class="keywordflow">if</span> (*err_code)</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span>  {</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span>    assert((m_state == State::S_NULL)</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span>           &amp;&amp; <span class="stringliteral">&quot;[A]synchronously-failed async_connect() should&#39;ve gone back to NULL state by its contract.&quot;</span>);</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span>  }</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span>  <span class="keywordflow">else</span></div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span>  {</div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span>    assert((m_state == State::S_PEER)</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span>           &amp;&amp; <span class="stringliteral">&quot;[A]synchronously-successful async_connect() should&#39;ve resulted in PEER state by its contract.&quot;</span>);</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span> </div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span>    m_conn_ev_wait_func.clear(); <span class="comment">// Might as well free some RAM (minor but why not).</span></div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span>    m_conn_ev_wait_hndl_peer_socket.reset(); <span class="comment">// Ditto.</span></div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span>    m_conn_async_worker.reset(); <span class="comment">// Ditto.</span></div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span>  } <span class="comment">// else if (!*err_code)</span></div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno">  280</span> </div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span>} <span class="comment">// Native_socket_stream::Impl::sync_connect()</span></div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span> </div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ad6443fb49be059dbe76c75d86a18197e">  284</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ad6443fb49be059dbe76c75d86a18197e">Native_socket_stream::Impl::async_connect</a>(<span class="keyword">const</span> <a class="code hl_class" href="classipc_1_1util_1_1Shared__name.html">Shared_name</a>&amp; absolute_name, <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>* sync_err_code_ptr,</div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span>                                               flow::async::Task_asio_err&amp;&amp; on_done_func)</div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span>{</div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span>  <span class="keyword">using </span><a class="code hl_typedef" href="namespaceipc_1_1transport_1_1asio__local__stream__socket.html#a05656e297b98f4c370841d2f9be52a5f">asio_local_stream_socket::Endpoint</a>;</div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span>  <span class="keyword">using </span><a class="code hl_typedef" href="namespaceipc_1_1transport_1_1asio__local__stream__socket.html#a1788f9dbd896bb71b3693f9ae25b40ae">asio_local_stream_socket::Peer_socket</a>;</div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno">  289</span>  <span class="keyword">using </span><a class="code hl_function" href="namespaceipc_1_1transport_1_1asio__local__stream__socket.html#af872520154fc00afaa59c7eec607a225">asio_local_stream_socket::endpoint_at_shared_name</a>;</div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno">  290</span>  <span class="keyword">using </span>flow::async::Task_asio_err;</div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno">  291</span>  <span class="keyword">using </span><a class="code hl_typedef" href="namespaceipc_1_1util.html#a31e67d3a017477a04b313927e2f2c733">util::Task</a>;</div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno">  292</span> </div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno">  293</span>  <span class="comment">/* Please see &quot;Connect-ops impl design&quot; in class doc header for background.</span></div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span><span class="comment">   *</span></div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span><span class="comment">   * Maintenance note: If async_connect() becomes public at some point (alongside sync_connect() in some form),</span></div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span><span class="comment">   * it&#39;ll need to return bool and perform the m_state/NULL and op_started&lt;CONN&gt;() checks here, returning</span></div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span><span class="comment">   * false as appropriate, or continuing as appropriate.</span></div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span><span class="comment">   *</span></div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span><span class="comment">   * Maintenance note: sync_err_code_ptr can&#39;t be null now, but standard Flow-style error reporting semantics</span></div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno">  300</span><span class="comment">   * will need to be implemented (throw exception on error, if it&#39;s indeed null). */</span></div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span> </div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno">  302</span>  assert(sync_err_code_ptr);</div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno">  303</span>  <span class="keyword">auto</span>&amp; sync_err_code = *sync_err_code_ptr;</div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span> </div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno">  305</span>  m_state = State::S_CONNECTING;</div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span> </div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span>  FLOW_LOG_INFO(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Will attempt connect to [&quot;</span> &lt;&lt; absolute_name &lt;&lt; <span class="stringliteral">&quot;].&quot;</span>);</div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  308</span> </div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span>  <span class="keyword">const</span> <span class="keyword">auto</span> remote_endpoint = <a class="code hl_function" href="namespaceipc_1_1transport_1_1asio__local__stream__socket.html#af872520154fc00afaa59c7eec607a225">endpoint_at_shared_name</a>(<a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream.html#aac68d14f4ef33505399df4fd04cd4669">get_logger</a>(), absolute_name, &amp;sync_err_code);</div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span>  assert((remote_endpoint == <a class="code hl_typedef" href="namespaceipc_1_1transport_1_1asio__local__stream__socket.html#a05656e297b98f4c370841d2f9be52a5f">Endpoint</a>()) == <span class="keywordtype">bool</span>(sync_err_code)); <span class="comment">// (By the way it WARNs on error.)</span></div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno">  311</span> </div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno">  312</span>  <span class="keywordflow">if</span> (!sync_err_code)</div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno">  313</span>  {</div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno">  314</span>    <span class="comment">// Endpoint was fine; do the actual async connect attempt.</span></div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno">  315</span> </div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno">  316</span><span class="preprocessor">#ifndef FLOW_OS_LINUX</span></div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno">  317</span>    <span class="keyword">static_assert</span>(<span class="keyword">false</span>, <span class="stringliteral">&quot;Some below code, at least comments, has been verified with Linux only.  &quot;</span></div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno">  318</span>                           <span class="stringliteral">&quot;Revisit before extending to other OS.&quot;</span>);</div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno">  319</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno">  320</span> </div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno">  321</span>    <span class="comment">/* Normally we&#39;d do m_peer_socket-&gt;async_connect(F), but in the sync_io pattern we have to break it down into</span></div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno">  322</span><span class="comment">     * some non-blocking operation(s) with an async-wait delegated to the user via m_conn_ev_wait_func().</span></div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno">  323</span><span class="comment">     * (Internally that&#39;s what -&gt;async_connect() does, but the wait is done by boost.asio.)</span></div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno">  324</span><span class="comment">     * Namely that&#39;s:</span></div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno">  325</span><span class="comment">     *   -# Set socket to non-blocking mode: -&gt;non_blocking(true).</span></div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno">  326</span><span class="comment">     *   -# Synchronous -&gt;connect().</span></div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno">  327</span><span class="comment">     *      -# This might succeed -- or fail -- immediately, as it&#39;s a local socket.  Done.  Otherwise:</span></div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno">  328</span><span class="comment">     *   -# It will yield would-block indicating connection in-progress.</span></div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno">  329</span><span class="comment">     *   -# Wait for writability of socket.</span></div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno">  330</span><span class="comment">     *   -# Once that&#39;s ready, done.  (If it really failed, it&#39;ll be &quot;writable&quot; -- but as soon as they try using it,</span></div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno">  331</span><span class="comment">     *      the true error shall be revealed.)</span></div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno">  332</span><span class="comment">     *</span></div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno">  333</span><span class="comment">     * We will do just that, for maximum resiliency in the face of who-knows-what.  In reality (as tested in Linux)</span></div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno">  334</span><span class="comment">     * the situation is simultaneously simpler -- in practice -- and more complicated (the reasons for why it works</span></div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno">  335</span><span class="comment">     * that way).  I explain... it&#39;s pretty messy.  This is with boost.asio from Boost 1.81.</span></div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno">  336</span><span class="comment">     *</span></div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno">  337</span><span class="comment">     * The trickiness is in -&gt;connect().  If the opposing acceptor is listen()ing, and there is sufficient backlog</span></div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno">  338</span><span class="comment">     * space, then it just immediately succeeds.  If it is not listen()ing, then it just immediately fails.</span></div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno">  339</span><span class="comment">     * Now suppose it is listen()ing, but it ran out of backlog space.  Then: Whether -&gt;non_blocking(true) or not</span></div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno">  340</span><span class="comment">     * (but, like, yes, it&#39;s true for us), it internally does the following.</span></div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno">  341</span><span class="comment">     *   -# ::connect().  If returns error.</span></div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno">  342</span><span class="comment">     *   -# If that error is would-block (EWOULDBLOCK or EAGAIN or EINPROGRESS; but really-really EAGAIN is what happens</span></div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno">  343</span><span class="comment">     *      in Linux with Unix domain sockets):</span></div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno">  344</span><span class="comment">     *   -# ::poll(), awaiting (with infinite timeout) writability of socket.</span></div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno">  345</span><span class="comment">     *      - Yes, it does this totally ignoring -&gt;non_blocking().  That reads like a bug, and no comments explain</span></div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno">  346</span><span class="comment">     *        it, but in practice it apparently is not a bug; at least it&#39;s not for Unix domain sockets in my</span></div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno">  347</span><span class="comment">     *        (ygoldfel) testing.</span></div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno">  348</span><span class="comment">     *   -# The ::poll() immediately returns 1 active FD, meaning it&#39;s writable.</span></div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno">  349</span><span class="comment">     *      - I have no idea why, exactly.  In point of fact in blocking mode the ::connect() will actually sit there</span></div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno">  350</span><span class="comment">     *        and wait for the backlog to clear.  It does make sense non-blocking ::connect() immediately yields</span></div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno">  351</span><span class="comment">     *        EAGAIN.  But then ::poll() reports immediate writability?  That is rather strange.  Why wouldn&#39;t</span></div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno">  352</span><span class="comment">     *        the connect() just return an error then?</span></div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno">  353</span><span class="comment">     *   -# The code then tries to get SO_ERROR through a ::getsockopt().  This might be a TCP-stack thing more;</span></div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno">  354</span><span class="comment">     *      in any case it yields no error in practice with Unix domain socket.  (I really traced through the code to</span></div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno">  355</span><span class="comment">     *      confirm this; socket_ops.ipp is the file.)</span></div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno">  356</span><span class="comment">     * So, ostensibly the -&gt;connect() succeeds in this situation.  However, -&gt;write_some() at that point just</span></div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno">  357</span><span class="comment">     * hilariously yields ENOTCONN.  So all is well that ends... poorly?  Point is, that&#39;s what happens; at least</span></div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno">  358</span><span class="comment">     * it doesn&#39;t just sit around blocking inside -&gt;connect() despite non_blocking(true).  Is it okay behavior</span></div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno">  359</span><span class="comment">     * given the situation (backlog full)?  Firsly backlog really shouldn&#39;t be full given a properly</span></div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno">  360</span><span class="comment">     * operating opposing acceptor (by the way it defaults to like 4096).  But if it is, I&#39;d say this behavior is</span></div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno">  361</span><span class="comment">     * fine, and my standard is this: Even using a nice, civilized, normal m_peer_socket-&gt;async_connect(), the</span></div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno">  362</span><span class="comment">     * resulting behavior is *exactly* the same: The -&gt;async_connect() quickly &quot;succeeds&quot;; then</span></div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno">  363</span><span class="comment">     * -&gt;async_write() immediately ENOTCONNs.  If we do equally well as a properly operated -&gt;async_connect(),</span></div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno">  364</span><span class="comment">     * then what else can they ask for really?</span></div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno">  365</span><span class="comment">     *</span></div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno">  366</span><span class="comment">     * That said, again, out of a preponderance of caution and future-proofness (?) we don&#39;t rely on the above</span></div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno">  367</span><span class="comment">     * always happening; and in fact have a clause for getting would_block from -&gt;connect() in which case</span></div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno">  368</span><span class="comment">     * we do the whole m_conn_ev_wait_func() thing.  For now it won&#39;t be exercised is all.</span></div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno">  369</span><span class="comment">     *</span></div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno">  370</span><span class="comment">     * Update: As noted in &quot;Connect-ops impl design&quot; section of class doc header, when/if some form of `*this`</span></div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno">  371</span><span class="comment">     * becomes networked, then async_connect() will probably be public, and this code-path will come into</span></div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno">  372</span><span class="comment">     * play (and sync_connect() perhaps would become potentially-blocking in that setting). */</span></div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno">  373</span> </div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno">  374</span>    assert((!m_peer_socket-&gt;non_blocking()) &amp;&amp; <span class="stringliteral">&quot;New NULL-state socket should start as not non-blocking.&quot;</span>);</div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno">  375</span>    m_peer_socket-&gt;non_blocking(<span class="keyword">true</span>, sync_err_code);</div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno">  376</span>    <span class="keywordflow">if</span> (!sync_err_code)</div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno">  377</span>    {</div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno">  378</span>      m_peer_socket-&gt;connect(remote_endpoint, sync_err_code);</div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno">  379</span>      <span class="comment">/* Debug/test note: can force rare async code path here: `sync_err_code = boost::asio::error::would_block;`</span></div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno">  380</span><span class="comment">       * Don&#39;t commit that obviously.  @todo Unit test. */</span></div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno">  381</span>      <span class="keywordflow">if</span> (sync_err_code == boost::asio::error::would_block)</div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno">  382</span>      {</div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno">  383</span>        FLOW_LOG_INFO(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: boost::asio::connect() (non-blocking) got would-block; &quot;</span></div>
<div class="line"><a id="l00384" name="l00384"></a><span class="lineno">  384</span>                      <span class="stringliteral">&quot;while documented as possible this is actually rather surprising based on our testing &quot;</span></div>
<div class="line"><a id="l00385" name="l00385"></a><span class="lineno">  385</span>                      <span class="stringliteral">&quot;and understanding of internal boost.asio code.  Proceeding to wait for writability.&quot;</span>);</div>
<div class="line"><a id="l00386" name="l00386"></a><span class="lineno">  386</span>        m_conn_ev_wait_func(&amp;(m_conn_ev_wait_hndl_peer_socket.value()),</div>
<div class="line"><a id="l00387" name="l00387"></a><span class="lineno">  387</span>                            <span class="keyword">true</span>, <span class="comment">// Wait for write.</span></div>
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno">  388</span>                            <span class="comment">// Once writable do this.</span></div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno">  389</span>                            boost::make_shared&lt;Task&gt;</div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno">  390</span>                              ([<span class="keyword">this</span>, on_done_func = std::move(on_done_func)]() <span class="keyword">mutable</span></div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno">  391</span>        {</div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno">  392</span>          conn_on_ev_peer_socket_writable(std::move(on_done_func));</div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno">  393</span>        }));</div>
<div class="line"><a id="l00394" name="l00394"></a><span class="lineno">  394</span> </div>
<div class="line"><a id="l00395" name="l00395"></a><span class="lineno">  395</span>        sync_err_code = <a class="code hl_enumvalue" href="namespaceipc_1_1transport_1_1error.html#adfef15ef4e76cc55d652fbd9c2797297aa667487757f9d6300f6888bac40bcc24">error::Code::S_SYNC_IO_WOULD_BLOCK</a>;</div>
<div class="line"><a id="l00396" name="l00396"></a><span class="lineno">  396</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00397" name="l00397"></a><span class="lineno">  397</span>      }</div>
<div class="line"><a id="l00398" name="l00398"></a><span class="lineno">  398</span>      <span class="comment">// else</span></div>
<div class="line"><a id="l00399" name="l00399"></a><span class="lineno">  399</span>      <span class="keywordflow">if</span> (sync_err_code)</div>
<div class="line"><a id="l00400" name="l00400"></a><span class="lineno">  400</span>      {</div>
<div class="line"><a id="l00401" name="l00401"></a><span class="lineno">  401</span>        FLOW_LOG_WARNING(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: boost::asio::connect() (non-blocking) completed &quot;</span></div>
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno">  402</span>                         <span class="stringliteral">&quot;immediately but with error [&quot;</span> &lt;&lt; sync_err_code &lt;&lt; <span class="stringliteral">&quot;] [&quot;</span> &lt;&lt; sync_err_code.message() &lt;&lt; <span class="stringliteral">&quot;].  &quot;</span></div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno">  403</span>                         <span class="stringliteral">&quot;Connect request failing.  Will emit error via sync-args.&quot;</span>);</div>
<div class="line"><a id="l00404" name="l00404"></a><span class="lineno">  404</span>      }</div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno">  405</span>      <span class="comment">// else { Success.  Reminder: this and fatal error are both much likelier than would-block. }</span></div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno">  406</span>    } <span class="comment">// if (!err_code) [m_peer_socket-&gt;non_blocking(true)] (but it may have become truthy inside)</span></div>
<div class="line"><a id="l00407" name="l00407"></a><span class="lineno">  407</span>    <span class="keywordflow">else</span> <span class="comment">// if (err_code) [m_peer_socket-&gt;non_blocking(true)]</span></div>
<div class="line"><a id="l00408" name="l00408"></a><span class="lineno">  408</span>    {</div>
<div class="line"><a id="l00409" name="l00409"></a><span class="lineno">  409</span>      FLOW_LOG_WARNING(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Trying to set non-blocking mode yielded error, &quot;</span></div>
<div class="line"><a id="l00410" name="l00410"></a><span class="lineno">  410</span>                       <span class="stringliteral">&quot;which is pretty crazy; details: [&quot;</span> &lt;&lt; sync_err_code &lt;&lt; <span class="stringliteral">&quot;] &quot;</span></div>
<div class="line"><a id="l00411" name="l00411"></a><span class="lineno">  411</span>                       <span class="stringliteral">&quot;[&quot;</span> &lt;&lt; sync_err_code.message() &lt;&lt; <span class="stringliteral">&quot;].  Connect request failing.  &quot;</span></div>
<div class="line"><a id="l00412" name="l00412"></a><span class="lineno">  412</span>                       <span class="stringliteral">&quot;Will emit error via sync-args.&quot;</span>);</div>
<div class="line"><a id="l00413" name="l00413"></a><span class="lineno">  413</span>    }</div>
<div class="line"><a id="l00414" name="l00414"></a><span class="lineno">  414</span>  } <span class="comment">// if (!sync_err_code) [endpoint construction] (but it may have become truthy inside)</span></div>
<div class="line"><a id="l00415" name="l00415"></a><span class="lineno">  415</span>  <span class="comment">// else if (sync_err_code) [endpoint construction] { It logged. }</span></div>
<div class="line"><a id="l00416" name="l00416"></a><span class="lineno">  416</span> </div>
<div class="line"><a id="l00417" name="l00417"></a><span class="lineno">  417</span>  <span class="comment">// If got here, sync_err_code indicates immediate success or failure of async_connect().</span></div>
<div class="line"><a id="l00418" name="l00418"></a><span class="lineno">  418</span>  m_state = sync_err_code ? State::S_NULL : State::S_PEER;</div>
<div class="line"><a id="l00419" name="l00419"></a><span class="lineno">  419</span>} <span class="comment">// Native_socket_stream::Impl::async_connect()</span></div>
<div class="line"><a id="l00420" name="l00420"></a><span class="lineno">  420</span> </div>
<div class="line"><a id="l00421" name="l00421"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#aaf965dc1eea3bee807c2fb6c4a937bb5">  421</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#aaf965dc1eea3bee807c2fb6c4a937bb5">Native_socket_stream::Impl::conn_on_ev_peer_socket_writable</a>(flow::async::Task_asio_err&amp;&amp; on_done_func)</div>
<div class="line"><a id="l00422" name="l00422"></a><span class="lineno">  422</span>{</div>
<div class="line"><a id="l00423" name="l00423"></a><span class="lineno">  423</span>  assert((m_state == State::S_CONNECTING) &amp;&amp; <span class="stringliteral">&quot;Only we can get out of CONNECTING state in the first place.&quot;</span>);</div>
<div class="line"><a id="l00424" name="l00424"></a><span class="lineno">  424</span> </div>
<div class="line"><a id="l00425" name="l00425"></a><span class="lineno">  425</span>  <span class="comment">/* The wait indicates it&#39;s writable... or &quot;writable,&quot; meaning in error state.  While we could try some</span></div>
<div class="line"><a id="l00426" name="l00426"></a><span class="lineno">  426</span><span class="comment">   * trick like ::getsockopt(SO_ERROR), it&#39;s all academic anyway: in Linux at least, as noted in long</span></div>
<div class="line"><a id="l00427" name="l00427"></a><span class="lineno">  427</span><span class="comment">   * comment in async_connect(), -&gt;connect() will either succeed or fail right away; and in the one</span></div>
<div class="line"><a id="l00428" name="l00428"></a><span class="lineno">  428</span><span class="comment">   * case where one can force a connectable-but-not-immediately situation -- hitting a backlog-full acceptor --</span></div>
<div class="line"><a id="l00429" name="l00429"></a><span class="lineno">  429</span><span class="comment">   * it&#39;ll still just succeed.  Anyway, if it weren&#39;t academic, then even if we falsely assume PEER state here,</span></div>
<div class="line"><a id="l00430" name="l00430"></a><span class="lineno">  430</span><span class="comment">   * when really m_peer_socket is hosed underneath, it&#39;ll just get exposed the moment we try to read or write.</span></div>
<div class="line"><a id="l00431" name="l00431"></a><span class="lineno">  431</span><span class="comment">   * So just relax. */</span></div>
<div class="line"><a id="l00432" name="l00432"></a><span class="lineno">  432</span> </div>
<div class="line"><a id="l00433" name="l00433"></a><span class="lineno">  433</span>  FLOW_LOG_INFO(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Writable-wait upon would-blocked connect attempt: done.  &quot;</span></div>
<div class="line"><a id="l00434" name="l00434"></a><span class="lineno">  434</span>                <span class="stringliteral">&quot;Entering PEER state.  Will emit to completion handler.&quot;</span>);</div>
<div class="line"><a id="l00435" name="l00435"></a><span class="lineno">  435</span>  m_state = State::S_PEER;</div>
<div class="line"><a id="l00436" name="l00436"></a><span class="lineno">  436</span>  on_done_func(<a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>());</div>
<div class="line"><a id="l00437" name="l00437"></a><span class="lineno">  437</span>  FLOW_LOG_TRACE(<span class="stringliteral">&quot;Handler completed.&quot;</span>);</div>
<div class="line"><a id="l00438" name="l00438"></a><span class="lineno">  438</span>} <span class="comment">// Native_socket_stream::Impl::conn_on_ev_peer_socket_writable()</span></div>
<div class="line"><a id="l00439" name="l00439"></a><span class="lineno">  439</span> </div>
<div class="line"><a id="l00440" name="l00440"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a8b9839bb39e95a51ed7c920137438a21">  440</a></span><span class="keywordtype">bool</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a8b9839bb39e95a51ed7c920137438a21">Native_socket_stream::Impl::replace_event_wait_handles</a></div>
<div class="line"><a id="l00441" name="l00441"></a><span class="lineno">  441</span>       (<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc.html#aa455c7f045059736578ca275fc1a851f">Function</a>&lt;<a class="code hl_class" href="classipc_1_1util_1_1sync__io_1_1Asio__waitable__native__handle.html">util::sync_io::Asio_waitable_native_handle</a> ()&gt;&amp; create_ev_wait_hndl_func)</div>
<div class="line"><a id="l00442" name="l00442"></a><span class="lineno">  442</span>{</div>
<div class="line"><a id="l00443" name="l00443"></a><span class="lineno">  443</span>  <span class="keywordflow">if</span> ((!m_snd_ev_wait_func.empty()) || (!m_rcv_ev_wait_func.empty()))</div>
<div class="line"><a id="l00444" name="l00444"></a><span class="lineno">  444</span>  {</div>
<div class="line"><a id="l00445" name="l00445"></a><span class="lineno">  445</span>    FLOW_LOG_WARNING(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Cannot replace event-wait handles after &quot;</span></div>
<div class="line"><a id="l00446" name="l00446"></a><span class="lineno">  446</span>                     <span class="stringliteral">&quot;a start-*-ops procedure has been executed.  Ignoring.&quot;</span>);</div>
<div class="line"><a id="l00447" name="l00447"></a><span class="lineno">  447</span>    <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00448" name="l00448"></a><span class="lineno">  448</span>  }</div>
<div class="line"><a id="l00449" name="l00449"></a><span class="lineno">  449</span>  <span class="comment">// else</span></div>
<div class="line"><a id="l00450" name="l00450"></a><span class="lineno">  450</span> </div>
<div class="line"><a id="l00451" name="l00451"></a><span class="lineno">  451</span>  FLOW_LOG_INFO(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Replacing event-wait handles (probably to replace underlying &quot;</span></div>
<div class="line"><a id="l00452" name="l00452"></a><span class="lineno">  452</span>                <span class="stringliteral">&quot;execution context without outside event loop&#39;s boost.asio Task_engine or similar).&quot;</span>);</div>
<div class="line"><a id="l00453" name="l00453"></a><span class="lineno">  453</span> </div>
<div class="line"><a id="l00454" name="l00454"></a><span class="lineno">  454</span>  assert(m_ev_wait_hndl_peer_socket.is_open());</div>
<div class="line"><a id="l00455" name="l00455"></a><span class="lineno">  455</span>  assert(m_snd_ev_wait_hndl_auto_ping_timer_fired_peer.is_open());</div>
<div class="line"><a id="l00456" name="l00456"></a><span class="lineno">  456</span>  assert(m_rcv_ev_wait_hndl_idle_timer_fired_peer.is_open());</div>
<div class="line"><a id="l00457" name="l00457"></a><span class="lineno">  457</span> </div>
<div class="line"><a id="l00458" name="l00458"></a><span class="lineno">  458</span>  <a class="code hl_struct" href="structipc_1_1util_1_1Native__handle.html">Native_handle</a> saved(m_ev_wait_hndl_peer_socket.release());</div>
<div class="line"><a id="l00459" name="l00459"></a><span class="lineno">  459</span>  m_ev_wait_hndl_peer_socket = create_ev_wait_hndl_func();</div>
<div class="line"><a id="l00460" name="l00460"></a><span class="lineno">  460</span>  m_ev_wait_hndl_peer_socket.assign(saved);</div>
<div class="line"><a id="l00461" name="l00461"></a><span class="lineno">  461</span> </div>
<div class="line"><a id="l00462" name="l00462"></a><span class="lineno">  462</span>  saved.<a class="code hl_variable" href="structipc_1_1util_1_1Native__handle.html#ab2f496740139c5752a25a30cf3325d86">m_native_handle</a> = m_snd_ev_wait_hndl_auto_ping_timer_fired_peer.release();</div>
<div class="line"><a id="l00463" name="l00463"></a><span class="lineno">  463</span>  m_snd_ev_wait_hndl_auto_ping_timer_fired_peer = create_ev_wait_hndl_func();</div>
<div class="line"><a id="l00464" name="l00464"></a><span class="lineno">  464</span>  m_snd_ev_wait_hndl_auto_ping_timer_fired_peer.assign(saved);</div>
<div class="line"><a id="l00465" name="l00465"></a><span class="lineno">  465</span> </div>
<div class="line"><a id="l00466" name="l00466"></a><span class="lineno">  466</span>  saved.<a class="code hl_variable" href="structipc_1_1util_1_1Native__handle.html#ab2f496740139c5752a25a30cf3325d86">m_native_handle</a> = m_rcv_ev_wait_hndl_idle_timer_fired_peer.release();</div>
<div class="line"><a id="l00467" name="l00467"></a><span class="lineno">  467</span>  m_rcv_ev_wait_hndl_idle_timer_fired_peer = create_ev_wait_hndl_func();</div>
<div class="line"><a id="l00468" name="l00468"></a><span class="lineno">  468</span>  m_rcv_ev_wait_hndl_idle_timer_fired_peer.assign(saved);</div>
<div class="line"><a id="l00469" name="l00469"></a><span class="lineno">  469</span> </div>
<div class="line"><a id="l00470" name="l00470"></a><span class="lineno">  470</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00471" name="l00471"></a><span class="lineno">  471</span>} <span class="comment">// Native_socket_stream::Impl::replace_event_wait_handles()</span></div>
<div class="line"><a id="l00472" name="l00472"></a><span class="lineno">  472</span> </div>
<div class="line"><a id="l00473" name="l00473"></a><span class="lineno">  473</span><a class="code hl_class" href="classipc_1_1util_1_1Process__credentials.html">util::Process_credentials</a></div>
<div class="line"><a id="l00474" name="l00474"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a6600090ca22c9b940155f7920b1465e4">  474</a></span>  <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a6600090ca22c9b940155f7920b1465e4">Native_socket_stream::Impl::remote_peer_process_credentials</a>(<a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>* err_code)<span class="keyword"> const</span></div>
<div class="line"><a id="l00475" name="l00475"></a><span class="lineno">  475</span><span class="keyword"></span>{</div>
<div class="line"><a id="l00476" name="l00476"></a><span class="lineno">  476</span>  <span class="keyword">using </span><a class="code hl_class" href="classipc_1_1transport_1_1asio__local__stream__socket_1_1Opt__peer__process__credentials.html">asio_local_stream_socket::Opt_peer_process_credentials</a>;</div>
<div class="line"><a id="l00477" name="l00477"></a><span class="lineno">  477</span>  <span class="keyword">using </span><a class="code hl_class" href="classipc_1_1util_1_1Process__credentials.html">util::Process_credentials</a>;</div>
<div class="line"><a id="l00478" name="l00478"></a><span class="lineno">  478</span> </div>
<div class="line"><a id="l00479" name="l00479"></a><span class="lineno">  479</span>  FLOW_ERROR_EXEC_AND_THROW_ON_ERROR(Process_credentials, <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream.html#a16b605c316922325415d60aeb0af3c40">remote_peer_process_credentials</a>, _1);</div>
<div class="line"><a id="l00480" name="l00480"></a><span class="lineno">  480</span>  <span class="comment">// ^-- Call ourselves and return if err_code is null.  If got to present line, err_code is not null.</span></div>
<div class="line"><a id="l00481" name="l00481"></a><span class="lineno">  481</span> </div>
<div class="line"><a id="l00482" name="l00482"></a><span class="lineno">  482</span>  <span class="keywordflow">if</span> (!state_peer(<span class="stringliteral">&quot;remote_peer_process_credentials()&quot;</span>))</div>
<div class="line"><a id="l00483" name="l00483"></a><span class="lineno">  483</span>  {</div>
<div class="line"><a id="l00484" name="l00484"></a><span class="lineno">  484</span>    err_code-&gt;clear(); <span class="comment">// As promised.</span></div>
<div class="line"><a id="l00485" name="l00485"></a><span class="lineno">  485</span>    <span class="keywordflow">return</span> Process_credentials();</div>
<div class="line"><a id="l00486" name="l00486"></a><span class="lineno">  486</span>  }</div>
<div class="line"><a id="l00487" name="l00487"></a><span class="lineno">  487</span>  <span class="comment">// else</span></div>
<div class="line"><a id="l00488" name="l00488"></a><span class="lineno">  488</span> </div>
<div class="line"><a id="l00489" name="l00489"></a><span class="lineno">  489</span>  <span class="keywordflow">if</span> (!m_peer_socket)</div>
<div class="line"><a id="l00490" name="l00490"></a><span class="lineno">  490</span>  {</div>
<div class="line"><a id="l00491" name="l00491"></a><span class="lineno">  491</span>    *err_code = <a class="code hl_enumvalue" href="namespaceipc_1_1transport_1_1error.html#adfef15ef4e76cc55d652fbd9c2797297acb14cace6f75d915cd800113c37721e7">error::Code::S_LOW_LVL_TRANSPORT_HOSED</a>;</div>
<div class="line"><a id="l00492" name="l00492"></a><span class="lineno">  492</span>    <span class="keywordflow">return</span> Process_credentials();</div>
<div class="line"><a id="l00493" name="l00493"></a><span class="lineno">  493</span>  }</div>
<div class="line"><a id="l00494" name="l00494"></a><span class="lineno">  494</span>  <span class="comment">// else</span></div>
<div class="line"><a id="l00495" name="l00495"></a><span class="lineno">  495</span> </div>
<div class="line"><a id="l00496" name="l00496"></a><span class="lineno">  496</span>  Opt_peer_process_credentials sock_opt; <span class="comment">// Contains default-cted Process_credentials.</span></div>
<div class="line"><a id="l00497" name="l00497"></a><span class="lineno">  497</span>  m_peer_socket-&gt;get_option(sock_opt, *err_code);</div>
<div class="line"><a id="l00498" name="l00498"></a><span class="lineno">  498</span> </div>
<div class="line"><a id="l00499" name="l00499"></a><span class="lineno">  499</span>  <span class="keywordflow">return</span> sock_opt;</div>
<div class="line"><a id="l00500" name="l00500"></a><span class="lineno">  500</span>} <span class="comment">// Native_socket_stream::Impl::remote_peer_process_credentials()</span></div>
<div class="line"><a id="l00501" name="l00501"></a><span class="lineno">  501</span> </div>
<div class="line"><a id="l00502" name="l00502"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a0ddd1b1e57bc61827d457e16e3db8600">  502</a></span><span class="keyword">const</span> std::string&amp; <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a0ddd1b1e57bc61827d457e16e3db8600">Native_socket_stream::Impl::nickname</a>()<span class="keyword"> const</span></div>
<div class="line"><a id="l00503" name="l00503"></a><span class="lineno">  503</span><span class="keyword"></span>{</div>
<div class="line"><a id="l00504" name="l00504"></a><span class="lineno">  504</span>  <span class="keywordflow">return</span> m_nickname;</div>
<div class="line"><a id="l00505" name="l00505"></a><span class="lineno">  505</span>}</div>
<div class="line"><a id="l00506" name="l00506"></a><span class="lineno">  506</span> </div>
<div class="line"><a id="l00507" name="l00507"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a18de125ad318ba69cee7d8cb8204ad12">  507</a></span><span class="keywordtype">bool</span> <a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a18de125ad318ba69cee7d8cb8204ad12">Native_socket_stream::Impl::state_peer</a>(<a class="code hl_typedef" href="namespaceipc_1_1util.html#ae6ac47812a90d1287c61e0b7de7bc4f5">util::String_view</a> context)<span class="keyword"> const</span></div>
<div class="line"><a id="l00508" name="l00508"></a><span class="lineno">  508</span><span class="keyword"></span>{</div>
<div class="line"><a id="l00509" name="l00509"></a><span class="lineno">  509</span>  <span class="keywordflow">if</span> (m_state != State::S_PEER)</div>
<div class="line"><a id="l00510" name="l00510"></a><span class="lineno">  510</span>  {</div>
<div class="line"><a id="l00511" name="l00511"></a><span class="lineno">  511</span>    FLOW_LOG_WARNING(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: In context [&quot;</span> &lt;&lt; context &lt;&lt; <span class="stringliteral">&quot;] we must be in PEER state, &quot;</span></div>
<div class="line"><a id="l00512" name="l00512"></a><span class="lineno">  512</span>                     <span class="stringliteral">&quot;but we are not.  Probably a user bug, but it is not for us to judge.&quot;</span>);</div>
<div class="line"><a id="l00513" name="l00513"></a><span class="lineno">  513</span>    <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00514" name="l00514"></a><span class="lineno">  514</span>  }</div>
<div class="line"><a id="l00515" name="l00515"></a><span class="lineno">  515</span>  <span class="comment">// else</span></div>
<div class="line"><a id="l00516" name="l00516"></a><span class="lineno">  516</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00517" name="l00517"></a><span class="lineno">  517</span>}</div>
<div class="line"><a id="l00518" name="l00518"></a><span class="lineno">  518</span> </div>
<div class="line"><a id="l00519" name="l00519"></a><span class="lineno"><a class="line" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream.html#a78a4f41f5d5b5d71a6092f3ade3252cc">  519</a></span>std::ostream&amp; <a class="code hl_friend" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream.html#ac6108711cc8b33c3b7ef0491ba78e2f6">operator&lt;&lt;</a>(std::ostream&amp; os, <span class="keyword">const</span> <a class="code hl_class" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html">Native_socket_stream::Impl</a>&amp; val)</div>
<div class="line"><a id="l00520" name="l00520"></a><span class="lineno">  520</span>{</div>
<div class="line"><a id="l00521" name="l00521"></a><span class="lineno">  521</span>  <span class="keywordflow">return</span> os &lt;&lt; <span class="stringliteral">&quot;SIO[&quot;</span> &lt;&lt; val.<a class="code hl_function" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a0ddd1b1e57bc61827d457e16e3db8600">nickname</a>() &lt;&lt; <span class="stringliteral">&quot;]@&quot;</span> &lt;&lt; <span class="keyword">static_cast&lt;</span><span class="keyword">const </span><span class="keywordtype">void</span>*<span class="keyword">&gt;</span>(&amp;val);</div>
<div class="line"><a id="l00522" name="l00522"></a><span class="lineno">  522</span>}</div>
<div class="line"><a id="l00523" name="l00523"></a><span class="lineno">  523</span> </div>
<div class="line"><a id="l00524" name="l00524"></a><span class="lineno">  524</span><span class="preprocessor">#if 0 </span><span class="comment">// See the declaration in class { body }; explains why `if 0` yet still here.</span></div>
<div class="line"><a id="l00525" name="l00525"></a><span class="lineno">  525</span><span class="keywordtype">void</span> Native_socket_stream::Impl::reset_sync_io_setup()</div>
<div class="line"><a id="l00526" name="l00526"></a><span class="lineno">  526</span>{</div>
<div class="line"><a id="l00527" name="l00527"></a><span class="lineno">  527</span>  <span class="keyword">using </span><a class="code hl_class" href="classipc_1_1util_1_1sync__io_1_1Asio__waitable__native__handle.html">util::sync_io::Asio_waitable_native_handle</a>;</div>
<div class="line"><a id="l00528" name="l00528"></a><span class="lineno">  528</span> </div>
<div class="line"><a id="l00529" name="l00529"></a><span class="lineno">  529</span>  <span class="comment">/* Please see our doc header first.  That has important background.  Back here again?  Read on:</span></div>
<div class="line"><a id="l00530" name="l00530"></a><span class="lineno">  530</span><span class="comment">   *   - We&#39;re supposed to undo start_receive_*_ops(), if it has been called.</span></div>
<div class="line"><a id="l00531" name="l00531"></a><span class="lineno">  531</span><span class="comment">   *   - We&#39;re supposed to undo start_send_*_ops(), if it has been called.</span></div>
<div class="line"><a id="l00532" name="l00532"></a><span class="lineno">  532</span><span class="comment">   *     - However, do *not* undo its send of protocol-negotiation out-message.  Well, that&#39;s impossible anyway.</span></div>
<div class="line"><a id="l00533" name="l00533"></a><span class="lineno">  533</span><span class="comment">   *       More accurately: do *not* undo m_protocol_negotiator.local_max_proto_ver_for_sending() (i.e., do not</span></div>
<div class="line"><a id="l00534" name="l00534"></a><span class="lineno">  534</span><span class="comment">   *       .reset()).  The effect of leaving that alone =&gt; start_send_*_ops() will skip attempt to send it (again).</span></div>
<div class="line"><a id="l00535" name="l00535"></a><span class="lineno">  535</span><span class="comment">   *   - We&#39;re supposed to undo replace_event_wait_handles(), if it has been called.</span></div>
<div class="line"><a id="l00536" name="l00536"></a><span class="lineno">  536</span><span class="comment">   *   - We must leave *this in a coherent state (so one can use it, as-if it had just been cted in PEER state).</span></div>
<div class="line"><a id="l00537" name="l00537"></a><span class="lineno">  537</span><span class="comment">   *   - We can assume certain things that&#39;ll make the above (in aggregate) not hard.  Namely, none of these have</span></div>
<div class="line"><a id="l00538" name="l00538"></a><span class="lineno">  538</span><span class="comment">   *     been called: async_receive_*(), send_*(), *end_sending(), auto_ping(), idle_timer_run().</span></div>
<div class="line"><a id="l00539" name="l00539"></a><span class="lineno">  539</span><span class="comment">   *     That&#39;s very helpful, because it means no async-waits are currently in progress; which means undoing</span></div>
<div class="line"><a id="l00540" name="l00540"></a><span class="lineno">  540</span><span class="comment">   *     the sync-op-pattern-init methods (start_*_ops() and/or replace_event_wait_handles()) doesn&#39;t lead to</span></div>
<div class="line"><a id="l00541" name="l00541"></a><span class="lineno">  541</span><span class="comment">   *     an incoherent *this.</span></div>
<div class="line"><a id="l00542" name="l00542"></a><span class="lineno">  542</span><span class="comment">   *     - It&#39;d be nice to assert() on that wherever practical.</span></div>
<div class="line"><a id="l00543" name="l00543"></a><span class="lineno">  543</span><span class="comment">   *     - HOWEVER!!!  A complicating factor is that, while no auto_ping() / send_*() / *end_sending() = helpful,</span></div>
<div class="line"><a id="l00544" name="l00544"></a><span class="lineno">  544</span><span class="comment">   *       nevertheless a send-op *will* have been invoked from start_send_*_ops().  As noted above, it would have</span></div>
<div class="line"><a id="l00545" name="l00545"></a><span class="lineno">  545</span><span class="comment">   *       sent the Protocol_negotiator out-message.  Thankfully, in actual fact, this can have caused one of</span></div>
<div class="line"><a id="l00546" name="l00546"></a><span class="lineno">  546</span><span class="comment">   *       exactly 2 state change sets, firstly m_protocol_negotiator.local_max_proto_ver_for_sending() now returns</span></div>
<div class="line"><a id="l00547" name="l00547"></a><span class="lineno">  547</span><span class="comment">   *       UNKNOWN plus secondly either</span></div>
<div class="line"><a id="l00548" name="l00548"></a><span class="lineno">  548</span><span class="comment">   *       - (success -- likely) no other state change; or</span></div>
<div class="line"><a id="l00549" name="l00549"></a><span class="lineno">  549</span><span class="comment">   *       - (failure -- unlikely) m_snd_pending_err_code is made truthy; m_peer_socket is nullified.</span></div>
<div class="line"><a id="l00550" name="l00550"></a><span class="lineno">  550</span><span class="comment">   *       Undoing start_*_ops() and replace_event_wait_handles() does *not* conflict with any of these eventualities.</span></div>
<div class="line"><a id="l00551" name="l00551"></a><span class="lineno">  551</span><span class="comment">   *       That is *this remains coherent.  To convince oneself of this, you only need to worry about the</span></div>
<div class="line"><a id="l00552" name="l00552"></a><span class="lineno">  552</span><span class="comment">   *       &quot;(failure -- unlikely)&quot; case, but in doing so you may have to go through other *this code to achieve it.</span></div>
<div class="line"><a id="l00553" name="l00553"></a><span class="lineno">  553</span><span class="comment">   *       Basically imagine *this after that scenario executes.</span></div>
<div class="line"><a id="l00554" name="l00554"></a><span class="lineno">  554</span><span class="comment">   *       - At first it&#39;s before any start_*_ops() or replace_event_wait_handles(), at which point essentially only</span></div>
<div class="line"><a id="l00555" name="l00555"></a><span class="lineno">  555</span><span class="comment">   *         those are callable.  Are they safe?  Yes:</span></div>
<div class="line"><a id="l00556" name="l00556"></a><span class="lineno">  556</span><span class="comment">   *         - start_*_ops(F): It&#39;ll just memorize move(F); and start_send_*_ops() will detect that Protocol_negotiator</span></div>
<div class="line"><a id="l00557" name="l00557"></a><span class="lineno">  557</span><span class="comment">   *           out-message was already sent and hence do nothing beyond memorizing move(F).</span></div>
<div class="line"><a id="l00558" name="l00558"></a><span class="lineno">  558</span><span class="comment">   *         - replace_event_wait_handles(): It does not access m_peer_socket or m_snd_pending_err_code at all.</span></div>
<div class="line"><a id="l00559" name="l00559"></a><span class="lineno">  559</span><span class="comment">   *       - Once they have been called: You can do other stuff, namely send_*(), async_receive_*(), and so on.</span></div>
<div class="line"><a id="l00560" name="l00560"></a><span class="lineno">  560</span><span class="comment">   *         Are they safe?  Yes, of course: It&#39;s just the vanilla an-error-has-hosed-*this-in-PEER-state situation. */</span></div>
<div class="line"><a id="l00561" name="l00561"></a><span class="lineno">  561</span> </div>
<div class="line"><a id="l00562" name="l00562"></a><span class="lineno">  562</span>  <span class="comment">// So first let&#39;s do our best to assert() the requirements.</span></div>
<div class="line"><a id="l00563" name="l00563"></a><span class="lineno">  563</span> </div>
<div class="line"><a id="l00564" name="l00564"></a><span class="lineno">  564</span>  assert((m_state == State::S_PEER) &amp;&amp; <span class="stringliteral">&quot;Must be in PEER state by contract.&quot;</span>);</div>
<div class="line"><a id="l00565" name="l00565"></a><span class="lineno">  565</span> </div>
<div class="line"><a id="l00566" name="l00566"></a><span class="lineno">  566</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> hosed = !m_peer_socket;</div>
<div class="line"><a id="l00567" name="l00567"></a><span class="lineno">  567</span>  assert((hosed == <span class="keywordtype">bool</span>(m_snd_pending_err_code))</div>
<div class="line"><a id="l00568" name="l00568"></a><span class="lineno">  568</span>         &amp;&amp; <span class="stringliteral">&quot;By contract we must not be in hosed state, unless due to internal initial-negotiation-send failing.&quot;</span>);</div>
<div class="line"><a id="l00569" name="l00569"></a><span class="lineno">  569</span> </div>
<div class="line"><a id="l00570" name="l00570"></a><span class="lineno">  570</span>  FLOW_LOG_TRACE(<span class="stringliteral">&quot;Socket stream [&quot;</span> &lt;&lt; *<span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Releasing idle-state object to new socket-stream core object.  &quot;</span></div>
<div class="line"><a id="l00571" name="l00571"></a><span class="lineno">  571</span>                 <span class="stringliteral">&quot;To finish this: Undoing sync_io-pattern init steps to released core.  &quot;</span></div>
<div class="line"><a id="l00572" name="l00572"></a><span class="lineno">  572</span>                 <span class="stringliteral">&quot;Is it hosed due to protocol-negotiation out-message send having failed? = [&quot;</span> &lt;&lt; hosed &lt;&lt; <span class="stringliteral">&quot;].&quot;</span>);</div>
<div class="line"><a id="l00573" name="l00573"></a><span class="lineno">  573</span> </div>
<div class="line"><a id="l00574" name="l00574"></a><span class="lineno">  574</span>  <span class="comment">/* m_snd_pending_payloads_q being non-empty would mean there&#39;s an active async-wait; that&#39;d be tough for us.</span></div>
<div class="line"><a id="l00575" name="l00575"></a><span class="lineno">  575</span><span class="comment">   * Slight subtlety: the Protocol_negotiator out-message send ostensibly could encounter would-block and hence</span></div>
<div class="line"><a id="l00576" name="l00576"></a><span class="lineno">  576</span><span class="comment">   * make this out-queue non-empty.  Except, no, it can&#39;t: there&#39;s no way the send buffer gets filled up by 1 small</span></div>
<div class="line"><a id="l00577" name="l00577"></a><span class="lineno">  577</span><span class="comment">   * message.  So if it&#39;s non-empty, they must have send_*()ed stuff against contract. */</span></div>
<div class="line"><a id="l00578" name="l00578"></a><span class="lineno">  578</span>  assert(m_snd_pending_payloads_q.empty()</div>
<div class="line"><a id="l00579" name="l00579"></a><span class="lineno">  579</span>         &amp;&amp; <span class="stringliteral">&quot;Did you send_*() against contract?  No way should initial-protocol-negotiation-send yield would-block.&quot;</span>);</div>
<div class="line"><a id="l00580" name="l00580"></a><span class="lineno">  580</span> </div>
<div class="line"><a id="l00581" name="l00581"></a><span class="lineno">  581</span>  assert((!m_snd_finished) &amp;&amp; <span class="stringliteral">&quot;Did you *end_sending() against contract?&quot;</span>);</div>
<div class="line"><a id="l00582" name="l00582"></a><span class="lineno">  582</span>  assert(m_snd_pending_on_last_send_done_func_or_empty.empty() &amp;&amp; <span class="stringliteral">&quot;Did you *end_sending() against contract?&quot;</span>);</div>
<div class="line"><a id="l00583" name="l00583"></a><span class="lineno">  583</span>  assert((m_snd_auto_ping_period == util::Fine_duration::zero()) &amp;&amp; <span class="stringliteral">&quot;Did you auto_ping() against contract?&quot;</span>);</div>
<div class="line"><a id="l00584" name="l00584"></a><span class="lineno">  584</span>  assert((!m_rcv_user_request) &amp;&amp; <span class="stringliteral">&quot;Did you async_receive_*() against contract?&quot;</span>);</div>
<div class="line"><a id="l00585" name="l00585"></a><span class="lineno">  585</span>  assert((!m_rcv_pending_err_code)</div>
<div class="line"><a id="l00586" name="l00586"></a><span class="lineno">  586</span>         &amp;&amp; <span class="stringliteral">&quot;Did you async_receive_*() or idle_timer_run() against contract?&quot;</span>);</div>
<div class="line"><a id="l00587" name="l00587"></a><span class="lineno">  587</span>  assert((m_rcv_idle_timeout == util::Fine_duration::zero()) &amp;&amp; <span class="stringliteral">&quot;Did you idle_timer_run() against contract?&quot;</span>);</div>
<div class="line"><a id="l00588" name="l00588"></a><span class="lineno">  588</span>  assert((m_protocol_negotiator.negotiated_proto_ver() == <a class="code hl_variable" href="classipc_1_1transport_1_1Protocol__negotiator.html#aa7e47f4f6a700aeaa9600a5426a17292">Protocol_negotiator::S_VER_UNKNOWN</a>)</div>
<div class="line"><a id="l00589" name="l00589"></a><span class="lineno">  589</span>         &amp;&amp; <span class="stringliteral">&quot;Did you async_receive_*() or idle_timer_run() against contract?&quot;</span>);</div>
<div class="line"><a id="l00590" name="l00590"></a><span class="lineno">  590</span> </div>
<div class="line"><a id="l00591" name="l00591"></a><span class="lineno">  591</span>  <span class="comment">// Time to undo stuff.</span></div>
<div class="line"><a id="l00592" name="l00592"></a><span class="lineno">  592</span> </div>
<div class="line"><a id="l00593" name="l00593"></a><span class="lineno">  593</span>  <span class="comment">/* start_*_ops() (excluding the m_protocol_negotiator out-message thing), in PEER state =</span></div>
<div class="line"><a id="l00594" name="l00594"></a><span class="lineno">  594</span><span class="comment">   *   - Memorize a user-supplied func into m_snd_ev_wait_func.</span></div>
<div class="line"><a id="l00595" name="l00595"></a><span class="lineno">  595</span><span class="comment">   *   - Ditto m_rcv_ev_wait_func.</span></div>
<div class="line"><a id="l00596" name="l00596"></a><span class="lineno">  596</span><span class="comment">   * Therefore just do this (possibly no-op): */</span></div>
<div class="line"><a id="l00597" name="l00597"></a><span class="lineno">  597</span>  m_snd_ev_wait_func.clear();</div>
<div class="line"><a id="l00598" name="l00598"></a><span class="lineno">  598</span>  m_rcv_ev_wait_func.clear();</div>
<div class="line"><a id="l00599" name="l00599"></a><span class="lineno">  599</span> </div>
<div class="line"><a id="l00600" name="l00600"></a><span class="lineno">  600</span>  <span class="comment">/* replace_event_wait_handles(), in PEER state =</span></div>
<div class="line"><a id="l00601" name="l00601"></a><span class="lineno">  601</span><span class="comment">   *   For the 3 watchable FDs in *this -- m_ev_wait_hndl_peer_socket, m_snd_ev_wait_hndl_auto_ping_timer_fired_peer,</span></div>
<div class="line"><a id="l00602" name="l00602"></a><span class="lineno">  602</span><span class="comment">   *   and m_rcv_ev_wait_hndl_idle_timer_fired_peer -- do this (for each guy S of those):</span></div>
<div class="line"><a id="l00603" name="l00603"></a><span class="lineno">  603</span><span class="comment">   *     - Starting point: S contains a particular raw FD, associated with Task_engine m_ev_hndl_task_engine_unused.</span></div>
<div class="line"><a id="l00604" name="l00604"></a><span class="lineno">  604</span><span class="comment">   *     - Do: Replace associated Task_engine m_ev_hndl_task_engine_unused with &lt;user-supplied one via functor thing&gt;.</span></div>
<div class="line"><a id="l00605" name="l00605"></a><span class="lineno">  605</span><span class="comment">   * So to undo it just do reverse it essentially (possibly no-op): */</span></div>
<div class="line"><a id="l00606" name="l00606"></a><span class="lineno">  606</span>  m_ev_wait_hndl_peer_socket</div>
<div class="line"><a id="l00607" name="l00607"></a><span class="lineno">  607</span>    = Asio_waitable_native_handle(m_ev_hndl_task_engine_unused,</div>
<div class="line"><a id="l00608" name="l00608"></a><span class="lineno">  608</span>                                  m_ev_wait_hndl_peer_socket.release());</div>
<div class="line"><a id="l00609" name="l00609"></a><span class="lineno">  609</span> </div>
<div class="line"><a id="l00610" name="l00610"></a><span class="lineno">  610</span>  m_snd_ev_wait_hndl_auto_ping_timer_fired_peer</div>
<div class="line"><a id="l00611" name="l00611"></a><span class="lineno">  611</span>    = Asio_waitable_native_handle(m_ev_hndl_task_engine_unused,</div>
<div class="line"><a id="l00612" name="l00612"></a><span class="lineno">  612</span>                                  m_snd_ev_wait_hndl_auto_ping_timer_fired_peer.release());</div>
<div class="line"><a id="l00613" name="l00613"></a><span class="lineno">  613</span> </div>
<div class="line"><a id="l00614" name="l00614"></a><span class="lineno">  614</span>  m_rcv_ev_wait_hndl_idle_timer_fired_peer</div>
<div class="line"><a id="l00615" name="l00615"></a><span class="lineno">  615</span>    = Asio_waitable_native_handle(m_ev_hndl_task_engine_unused,</div>
<div class="line"><a id="l00616" name="l00616"></a><span class="lineno">  616</span>                                  m_rcv_ev_wait_hndl_idle_timer_fired_peer.release());</div>
<div class="line"><a id="l00617" name="l00617"></a><span class="lineno">  617</span>} <span class="comment">// Native_socket_stream::Impl::reset_sync_io_setup()</span></div>
<div class="line"><a id="l00618" name="l00618"></a><span class="lineno">  618</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00619" name="l00619"></a><span class="lineno">  619</span> </div>
<div class="line"><a id="l00620" name="l00620"></a><span class="lineno">  620</span>} <span class="comment">// namespace ipc::transport::sync_io</span></div>
<div class="ttc" id="aclassipc_1_1transport_1_1Protocol__negotiator_html_aa7e47f4f6a700aeaa9600a5426a17292"><div class="ttname"><a href="classipc_1_1transport_1_1Protocol__negotiator.html#aa7e47f4f6a700aeaa9600a5426a17292">ipc::transport::Protocol_negotiator::S_VER_UNKNOWN</a></div><div class="ttdeci">static constexpr proto_ver_t S_VER_UNKNOWN</div><div class="ttdoc">A proto_ver_t value, namely a negative one, which is a reserved value indicating &quot;unknown version&quot;; i...</div><div class="ttdef"><b>Definition:</b> <a href="protocol__negotiator_8hpp_source.html#l00215">protocol_negotiator.hpp:215</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1asio__local__stream__socket_1_1Opt__peer__process__credentials_html"><div class="ttname"><a href="classipc_1_1transport_1_1asio__local__stream__socket_1_1Opt__peer__process__credentials.html">ipc::transport::asio_local_stream_socket::Opt_peer_process_credentials</a></div><div class="ttdoc">Gettable (read-only) socket option for use with asio_local_stream_socket::Peer_socket ....</div><div class="ttdef"><b>Definition:</b> <a href="asio__local__stream__socket_8hpp_source.html#l00052">asio_local_stream_socket.hpp:54</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html">ipc::transport::sync_io::Native_socket_stream::Impl</a></div><div class="ttdoc">Internal, non-movable pImpl implementation of sync_io::Native_socket_stream class.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8hpp_source.html#l00314">native_socket_stream_impl.hpp:317</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a0ac6a82eda9256cba45f3b5365d79355"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a0ac6a82eda9256cba45f3b5365d79355">ipc::transport::sync_io::Native_socket_stream::Impl::m_ev_wait_hndl_peer_socket</a></div><div class="ttdeci">util::sync_io::Asio_waitable_native_handle m_ev_wait_hndl_peer_socket</div><div class="ttdoc">Descriptor waitable by outside event loop async-waits – storing the same Native_handle as (and thus b...</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8hpp_source.html#l01355">native_socket_stream_impl.hpp:1355</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a0ddd1b1e57bc61827d457e16e3db8600"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a0ddd1b1e57bc61827d457e16e3db8600">ipc::transport::sync_io::Native_socket_stream::Impl::nickname</a></div><div class="ttdeci">const std::string &amp; nickname() const</div><div class="ttdoc">See Native_socket_stream counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8cpp_source.html#l00502">native_socket_stream_impl.cpp:502</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a18de125ad318ba69cee7d8cb8204ad12"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a18de125ad318ba69cee7d8cb8204ad12">ipc::transport::sync_io::Native_socket_stream::Impl::state_peer</a></div><div class="ttdeci">bool state_peer(util::String_view context) const</div><div class="ttdoc">Checks whether m_state has reached State::S_PEER; if so returns true; if not logs WARNING and returns...</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8cpp_source.html#l00507">native_socket_stream_impl.cpp:507</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a1caa342f726a273deb64317cbec8b5ea"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a1caa342f726a273deb64317cbec8b5ea">ipc::transport::sync_io::Native_socket_stream::Impl::m_nb_task_engine</a></div><div class="ttdeci">flow::util::Task_engine m_nb_task_engine</div><div class="ttdoc">The Task_engine for m_peer_socket.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8hpp_source.html#l01182">native_socket_stream_impl.hpp:1182</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a3c5187e34876a0419ff70734ec0fbf14"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a3c5187e34876a0419ff70734ec0fbf14">ipc::transport::sync_io::Native_socket_stream::Impl::sync_connect</a></div><div class="ttdeci">bool sync_connect(const Shared_name &amp;absolute_name, Error_code *err_code)</div><div class="ttdoc">See Native_socket_stream counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8cpp_source.html#l00188">native_socket_stream_impl.cpp:188</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a3c6214376ab8bc59823635d405f9704a"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a3c6214376ab8bc59823635d405f9704a">ipc::transport::sync_io::Native_socket_stream::Impl::start_connect_ops</a></div><div class="ttdeci">bool start_connect_ops(util::sync_io::Event_wait_func &amp;&amp;ev_wait_func)</div><div class="ttdoc">It is start_ops&lt;Op::S_CONN&gt;().</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8cpp_source.html#l00183">native_socket_stream_impl.cpp:183</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a42aab631e9c70bfaa53764309adfe37c"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a42aab631e9c70bfaa53764309adfe37c">ipc::transport::sync_io::Native_socket_stream::Impl::m_peer_socket</a></div><div class="ttdeci">boost::movelib::unique_ptr&lt; asio_local_stream_socket::Peer_socket &gt; m_peer_socket</div><div class="ttdoc">The peer stream-type Unix domain socket; or null pointer if we've detected the connection has become ...</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8hpp_source.html#l01299">native_socket_stream_impl.hpp:1299</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a64e47a38b3ed59e37295336114918142"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a64e47a38b3ed59e37295336114918142">ipc::transport::sync_io::Native_socket_stream::Impl::m_state</a></div><div class="ttdeci">State m_state</div><div class="ttdoc">The current state of *this.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8hpp_source.html#l01145">native_socket_stream_impl.hpp:1145</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a6600090ca22c9b940155f7920b1465e4"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a6600090ca22c9b940155f7920b1465e4">ipc::transport::sync_io::Native_socket_stream::Impl::remote_peer_process_credentials</a></div><div class="ttdeci">util::Process_credentials remote_peer_process_credentials(Error_code *err_code) const</div><div class="ttdoc">See Native_socket_stream counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8cpp_source.html#l00474">native_socket_stream_impl.cpp:474</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a7b825476c04ea53eccea862d34f830c6"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a7b825476c04ea53eccea862d34f830c6">ipc::transport::sync_io::Native_socket_stream::Impl::S_MAX_META_BLOB_LENGTH</a></div><div class="ttdeci">static const size_t S_MAX_META_BLOB_LENGTH</div><div class="ttdoc">See Native_socket_stream counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8hpp_source.html#l00322">native_socket_stream_impl.hpp:322</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a881c376f1ee37f9b1a20f770824f55d9"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a881c376f1ee37f9b1a20f770824f55d9">ipc::transport::sync_io::Native_socket_stream::Impl::low_lvl_payload_blob_length_t</a></div><div class="ttdeci">uint16_t low_lvl_payload_blob_length_t</div><div class="ttdoc">The type used to encode the meta-blob length; this puts a cap on how long the meta-blobs can be.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8hpp_source.html#l00685">native_socket_stream_impl.hpp:685</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a8b9839bb39e95a51ed7c920137438a21"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a8b9839bb39e95a51ed7c920137438a21">ipc::transport::sync_io::Native_socket_stream::Impl::replace_event_wait_handles</a></div><div class="ttdeci">bool replace_event_wait_handles(const Function&lt; util::sync_io::Asio_waitable_native_handle()&gt; &amp;create_ev_wait_hndl_func)</div><div class="ttdoc">See Native_socket_stream counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8cpp_source.html#l00440">native_socket_stream_impl.cpp:441</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a9c9825f74472868eb1397c33edf78fb4"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a9c9825f74472868eb1397c33edf78fb4">ipc::transport::sync_io::Native_socket_stream::Impl::State</a></div><div class="ttdeci">State</div><div class="ttdoc">Overall state of a Native_socket_stream::Impl.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8hpp_source.html#l00576">native_socket_stream_impl.hpp:577</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_a9c9825f74472868eb1397c33edf78fb4ad9a05d721258c584cd559c56fd035887"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#a9c9825f74472868eb1397c33edf78fb4ad9a05d721258c584cd559c56fd035887">ipc::transport::sync_io::Native_socket_stream::Impl::State::S_PEER</a></div><div class="ttdeci">@ S_PEER</div><div class="ttdoc">Is or was a connected peer.</div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_aa2d79438a470aa94feb2fbbcd72dc629"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#aa2d79438a470aa94feb2fbbcd72dc629">ipc::transport::sync_io::Native_socket_stream::Impl::m_conn_ev_wait_hndl_peer_socket</a></div><div class="ttdeci">std::optional&lt; util::sync_io::Asio_waitable_native_handle &gt; m_conn_ev_wait_hndl_peer_socket</div><div class="ttdoc">This is to (m_peer_socket, m_conn_async_worker) what m_ev_wait_hndl_peer_socket is to (m_peer_socket,...</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8hpp_source.html#l01409">native_socket_stream_impl.hpp:1409</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_aaf965dc1eea3bee807c2fb6c4a937bb5"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#aaf965dc1eea3bee807c2fb6c4a937bb5">ipc::transport::sync_io::Native_socket_stream::Impl::conn_on_ev_peer_socket_writable</a></div><div class="ttdeci">void conn_on_ev_peer_socket_writable(flow::async::Task_asio_err &amp;&amp;on_done_func)</div><div class="ttdoc">Handler for the async-wait in case async_connect() cannot synchronously complete the m_peer_socket co...</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8cpp_source.html#l00421">native_socket_stream_impl.cpp:421</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_ad5e487595e2a58f7ff25b4f4c91fe4bc"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ad5e487595e2a58f7ff25b4f4c91fe4bc">ipc::transport::sync_io::Native_socket_stream::Impl::S_META_BLOB_LENGTH_PING_SENTINEL</a></div><div class="ttdeci">static const low_lvl_payload_blob_length_t S_META_BLOB_LENGTH_PING_SENTINEL</div><div class="ttdoc">Value for the length field in payload 1 that means &quot;not a length; indicating this is a ping message....</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8hpp_source.html#l00697">native_socket_stream_impl.hpp:697</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_ad6443fb49be059dbe76c75d86a18197e"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ad6443fb49be059dbe76c75d86a18197e">ipc::transport::sync_io::Native_socket_stream::Impl::async_connect</a></div><div class="ttdeci">void async_connect(const Shared_name &amp;absolute_name, Error_code *sync_err_code, flow::async::Task_asio_err &amp;&amp;on_done_func)</div><div class="ttdoc">The core of sync_connect(), written in the sync_io-pattern style.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8cpp_source.html#l00284">native_socket_stream_impl.cpp:284</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_adeb067b178e7688dde0ca7c5eb877b1d"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#adeb067b178e7688dde0ca7c5eb877b1d">ipc::transport::sync_io::Native_socket_stream::Impl::~Impl</a></div><div class="ttdeci">~Impl()</div><div class="ttdoc">See Native_socket_stream counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8cpp_source.html#l00176">native_socket_stream_impl.cpp:176</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_ae094bf64dda8f6c6e013400a77fd1343"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ae094bf64dda8f6c6e013400a77fd1343">ipc::transport::sync_io::Native_socket_stream::Impl::m_conn_async_worker</a></div><div class="ttdeci">std::optional&lt; flow::async::Single_thread_task_loop &gt; m_conn_async_worker</div><div class="ttdoc">Event loop used exclusively by sync_connect() which as needed -&gt;start()s a short-lived thread and -&gt;s...</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8hpp_source.html#l01379">native_socket_stream_impl.hpp:1379</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl_html_ae9194e2eefe81185d1bf067b1f934657"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream_1_1Impl.html#ae9194e2eefe81185d1bf067b1f934657">ipc::transport::sync_io::Native_socket_stream::Impl::Impl</a></div><div class="ttdeci">Impl(flow::log::Logger *logger_ptr, util::String_view nickname_str)</div><div class="ttdoc">See Native_socket_stream counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2detail_2native__socket__stream__impl_8cpp_source.html#l00070">native_socket_stream_impl.cpp:70</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_html_a16b605c316922325415d60aeb0af3c40"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream.html#a16b605c316922325415d60aeb0af3c40">ipc::transport::sync_io::Native_socket_stream::remote_peer_process_credentials</a></div><div class="ttdeci">util::Process_credentials remote_peer_process_credentials(Error_code *err_code=0) const</div><div class="ttdoc">OS-reported process credential (PID, etc.) info about the other connected peer's process,...</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2native__socket__stream_8cpp_source.html#l00097">native_socket_stream.cpp:97</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_html_a2e22d55369f5bd67a4e0d277b73f2823"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream.html#a2e22d55369f5bd67a4e0d277b73f2823">ipc::transport::sync_io::Native_socket_stream::sync_connect</a></div><div class="ttdeci">bool sync_connect(const Shared_name &amp;absolute_name, Error_code *err_code=0)</div><div class="ttdoc">Identical to Async_io_obj counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2native__socket__stream_8cpp_source.html#l00083">native_socket_stream.cpp:83</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_html_aac68d14f4ef33505399df4fd04cd4669"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream.html#aac68d14f4ef33505399df4fd04cd4669">ipc::transport::sync_io::Native_socket_stream::get_logger</a></div><div class="ttdeci">flow::log::Logger * get_logger() const</div><div class="ttdoc">Returns logger (possibly null).</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2native__socket__stream_8cpp_source.html#l00148">native_socket_stream.cpp:148</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_html_ac6108711cc8b33c3b7ef0491ba78e2f6"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream.html#ac6108711cc8b33c3b7ef0491ba78e2f6">ipc::transport::sync_io::Native_socket_stream::operator&lt;&lt;</a></div><div class="ttdeci">friend std::ostream &amp; operator&lt;&lt;(std::ostream &amp;os, const Native_socket_stream &amp;val)</div><div class="ttdoc">Friend of Native_socket_stream.</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2native__socket__stream_8cpp_source.html#l00155">native_socket_stream.cpp:155</a></div></div>
<div class="ttc" id="aclassipc_1_1util_1_1Process__credentials_html"><div class="ttname"><a href="classipc_1_1util_1_1Process__credentials.html">ipc::util::Process_credentials</a></div><div class="ttdoc">A process's credentials (PID, UID, GID as of this writing).</div><div class="ttdef"><b>Definition:</b> <a href="process__credentials_8hpp_source.html#l00038">process_credentials.hpp:39</a></div></div>
<div class="ttc" id="aclassipc_1_1util_1_1Shared__name_html"><div class="ttname"><a href="classipc_1_1util_1_1Shared__name.html">ipc::util::Shared_name</a></div><div class="ttdoc">String-wrapping abstraction representing a name uniquely distinguishing a kernel-persistent entity fr...</div><div class="ttdef"><b>Definition:</b> <a href="shared__name_8hpp_source.html#l00241">shared_name.hpp:242</a></div></div>
<div class="ttc" id="aclassipc_1_1util_1_1sync__io_1_1Asio__waitable__native__handle_html"><div class="ttname"><a href="classipc_1_1util_1_1sync__io_1_1Asio__waitable__native__handle.html">ipc::util::sync_io::Asio_waitable_native_handle</a></div><div class="ttdoc">Useful if using the sync_io pattern within a user event loop built on boost.asio (optionally with flo...</div><div class="ttdef"><b>Definition:</b> <a href="asio__waitable__native__hndl_8hpp_source.html#l00080">asio_waitable_native_hndl.hpp:81</a></div></div>
<div class="ttc" id="aclassipc_1_1util_1_1sync__io_1_1Asio__waitable__native__handle_html_a7d28277f9ef090032b0483c65f79f23c"><div class="ttname"><a href="classipc_1_1util_1_1sync__io_1_1Asio__waitable__native__handle.html#a7d28277f9ef090032b0483c65f79f23c">ipc::util::sync_io::Asio_waitable_native_handle::assign</a></div><div class="ttdeci">void assign(Native_handle hndl)</div><div class="ttdoc">Loads value to be returned by native_handle().</div><div class="ttdef"><b>Definition:</b> <a href="asio__waitable__native__hndl_8cpp_source.html#l00065">asio_waitable_native_hndl.cpp:65</a></div></div>
<div class="ttc" id="aipc__core_2src_2ipc_2transport_2error_8hpp_html"><div class="ttname"><a href="ipc__core_2src_2ipc_2transport_2error_8hpp.html">error.hpp</a></div></div>
<div class="ttc" id="anamespaceipc_1_1transport_1_1asio__local__stream__socket_html_a05656e297b98f4c370841d2f9be52a5f"><div class="ttname"><a href="namespaceipc_1_1transport_1_1asio__local__stream__socket.html#a05656e297b98f4c370841d2f9be52a5f">ipc::transport::asio_local_stream_socket::Endpoint</a></div><div class="ttdeci">Protocol::endpoint Endpoint</div><div class="ttdoc">Short-hand for boost.asio Unix domain peer stream-socket endpoint.</div><div class="ttdef"><b>Definition:</b> <a href="asio__local__stream__socket__fwd_8hpp_source.html#l00117">asio_local_stream_socket_fwd.hpp:117</a></div></div>
<div class="ttc" id="anamespaceipc_1_1transport_1_1asio__local__stream__socket_html_a1788f9dbd896bb71b3693f9ae25b40ae"><div class="ttname"><a href="namespaceipc_1_1transport_1_1asio__local__stream__socket.html#a1788f9dbd896bb71b3693f9ae25b40ae">ipc::transport::asio_local_stream_socket::Peer_socket</a></div><div class="ttdeci">Protocol::socket Peer_socket</div><div class="ttdoc">Short-hand for boost.asio Unix domain peer stream-socket (usually-connected-or-empty guy).</div><div class="ttdef"><b>Definition:</b> <a href="asio__local__stream__socket__fwd_8hpp_source.html#l00114">asio_local_stream_socket_fwd.hpp:114</a></div></div>
<div class="ttc" id="anamespaceipc_1_1transport_1_1asio__local__stream__socket_html_af872520154fc00afaa59c7eec607a225"><div class="ttname"><a href="namespaceipc_1_1transport_1_1asio__local__stream__socket.html#af872520154fc00afaa59c7eec607a225">ipc::transport::asio_local_stream_socket::endpoint_at_shared_name</a></div><div class="ttdeci">Endpoint endpoint_at_shared_name(flow::log::Logger *logger_ptr, const Shared_name &amp;absolute_name, Error_code *err_code)</div><div class="ttdoc">Returns an Endpoint corresponding to the given absolute Shared_name, so that an Acceptor or Peer_sock...</div><div class="ttdef"><b>Definition:</b> <a href="detail_2asio__local__stream__socket_8cpp_source.html#l00028">asio_local_stream_socket.cpp:28</a></div></div>
<div class="ttc" id="anamespaceipc_1_1transport_1_1error_html_adfef15ef4e76cc55d652fbd9c2797297aa667487757f9d6300f6888bac40bcc24"><div class="ttname"><a href="namespaceipc_1_1transport_1_1error.html#adfef15ef4e76cc55d652fbd9c2797297aa667487757f9d6300f6888bac40bcc24">ipc::transport::error::Code::S_SYNC_IO_WOULD_BLOCK</a></div><div class="ttdeci">@ S_SYNC_IO_WOULD_BLOCK</div><div class="ttdoc">A sync_io operation could not immediately complete; it will complete contingent on active async-wait ...</div></div>
<div class="ttc" id="anamespaceipc_1_1transport_1_1error_html_adfef15ef4e76cc55d652fbd9c2797297acb14cace6f75d915cd800113c37721e7"><div class="ttname"><a href="namespaceipc_1_1transport_1_1error.html#adfef15ef4e76cc55d652fbd9c2797297acb14cace6f75d915cd800113c37721e7">ipc::transport::error::Code::S_LOW_LVL_TRANSPORT_HOSED</a></div><div class="ttdeci">@ S_LOW_LVL_TRANSPORT_HOSED</div><div class="ttdoc">Unable to access low-level details: an earlier-reported system error had hosed the underlying transpo...</div></div>
<div class="ttc" id="anamespaceipc_1_1transport_1_1sync__io_html"><div class="ttname"><a href="namespaceipc_1_1transport_1_1sync__io.html">ipc::transport::sync_io</a></div><div class="ttdoc">sync_io-pattern counterparts to async-I/O-pattern object types in parent namespace ipc::transport.</div><div class="ttdef"><b>Definition:</b> <a href="detail_2transport__fwd_8hpp_source.html#l00069">transport_fwd.hpp:70</a></div></div>
<div class="ttc" id="anamespaceipc_1_1transport_html_a7ee4551983d9df16ec16a3139bac50e8"><div class="ttname"><a href="namespaceipc_1_1transport.html#a7ee4551983d9df16ec16a3139bac50e8">ipc::transport::Native_handle</a></div><div class="ttdeci">util::Native_handle Native_handle</div><div class="ttdoc">Convenience alias for the commonly used type util::Native_handle.</div><div class="ttdef"><b>Definition:</b> <a href="transport__fwd_8hpp_source.html#l00081">transport_fwd.hpp:81</a></div></div>
<div class="ttc" id="anamespaceipc_1_1util_1_1sync__io_html_aa0b9a3cc6bdc7dedbef4f9e06851aa24"><div class="ttname"><a href="namespaceipc_1_1util_1_1sync__io.html#aa0b9a3cc6bdc7dedbef4f9e06851aa24">ipc::util::sync_io::Event_wait_func</a></div><div class="ttdeci">Function&lt; void(Asio_waitable_native_handle *hndl_of_interest, bool ev_of_interest_snd_else_rcv, Task_ptr &amp;&amp;on_active_ev_func)&gt; Event_wait_func</div><div class="ttdoc">In sync_io pattern, concrete type storing user-supplied function invoked by pattern-implementing ipc:...</div><div class="ttdef"><b>Definition:</b> <a href="sync__io__fwd_8hpp_source.html#l00817">sync_io_fwd.hpp:819</a></div></div>
<div class="ttc" id="anamespaceipc_1_1util_1_1sync__io_html_ac6973c71fc70c6d867b0f2255c642532"><div class="ttname"><a href="namespaceipc_1_1util_1_1sync__io.html#ac6973c71fc70c6d867b0f2255c642532">ipc::util::sync_io::Task_ptr</a></div><div class="ttdeci">boost::shared_ptr&lt; Task &gt; Task_ptr</div><div class="ttdoc">Short-hand for ref-counted pointer to a Function&lt;&gt; that takes no arguments and returns nothing; in pa...</div><div class="ttdef"><b>Definition:</b> <a href="sync__io__fwd_8hpp_source.html#l00585">sync_io_fwd.hpp:585</a></div></div>
<div class="ttc" id="anamespaceipc_1_1util_html_a31e67d3a017477a04b313927e2f2c733"><div class="ttname"><a href="namespaceipc_1_1util.html#a31e67d3a017477a04b313927e2f2c733">ipc::util::Task</a></div><div class="ttdeci">flow::async::Task Task</div><div class="ttdoc">Short-hand for polymorphic function (a-la std::function&lt;&gt;) that takes no arguments and returns nothin...</div><div class="ttdef"><b>Definition:</b> <a href="util__fwd_8hpp_source.html#l00122">util_fwd.hpp:122</a></div></div>
<div class="ttc" id="anamespaceipc_1_1util_html_ac66141280c3b7295a86b65209f31cc58"><div class="ttname"><a href="namespaceipc_1_1util.html#ac66141280c3b7295a86b65209f31cc58">ipc::util::Fine_duration</a></div><div class="ttdeci">flow::Fine_duration Fine_duration</div><div class="ttdoc">Short-hand for Flow's Fine_duration.</div><div class="ttdef"><b>Definition:</b> <a href="util__fwd_8hpp_source.html#l00117">util_fwd.hpp:117</a></div></div>
<div class="ttc" id="anamespaceipc_1_1util_html_ae6ac47812a90d1287c61e0b7de7bc4f5"><div class="ttname"><a href="namespaceipc_1_1util.html#ae6ac47812a90d1287c61e0b7de7bc4f5">ipc::util::String_view</a></div><div class="ttdeci">flow::util::String_view String_view</div><div class="ttdoc">Short-hand for Flow's String_view.</div><div class="ttdef"><b>Definition:</b> <a href="util__fwd_8hpp_source.html#l00115">util_fwd.hpp:115</a></div></div>
<div class="ttc" id="anamespaceipc_html_a4ccdeed058222c635745a4dc830e99f7"><div class="ttname"><a href="namespaceipc.html#a4ccdeed058222c635745a4dc830e99f7">ipc::Log_component</a></div><div class="ttdeci">Log_component</div><div class="ttdoc">The flow::log::Component payload enumeration containing various log components used by Flow-IPC inter...</div><div class="ttdef"><b>Definition:</b> <a href="common_8hpp_source.html#l00322">common.hpp:323</a></div></div>
<div class="ttc" id="anamespaceipc_html_aa3192e586cc45d3e7c22463bf2760f89"><div class="ttname"><a href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">ipc::Error_code</a></div><div class="ttdeci">flow::Error_code Error_code</div><div class="ttdoc">Short-hand for flow::Error_code which is very common.</div><div class="ttdef"><b>Definition:</b> <a href="common_8hpp_source.html#l00298">common.hpp:298</a></div></div>
<div class="ttc" id="anamespaceipc_html_aa455c7f045059736578ca275fc1a851f"><div class="ttname"><a href="namespaceipc.html#aa455c7f045059736578ca275fc1a851f">ipc::Function</a></div><div class="ttdeci">flow::Function&lt; Signature &gt; Function</div><div class="ttdoc">Short-hand for polymorphic functor holder which is very common. This is essentially std::function.</div><div class="ttdef"><b>Definition:</b> <a href="common_8hpp_source.html#l00302">common.hpp:302</a></div></div>
<div class="ttc" id="astructipc_1_1util_1_1Native__handle_html"><div class="ttname"><a href="structipc_1_1util_1_1Native__handle.html">ipc::util::Native_handle</a></div><div class="ttdoc">A monolayer-thin wrapper around a native handle, a/k/a descriptor a/k/a FD.</div><div class="ttdef"><b>Definition:</b> <a href="native__handle_8hpp_source.html#l00062">native_handle.hpp:63</a></div></div>
<div class="ttc" id="astructipc_1_1util_1_1Native__handle_html_ab2f496740139c5752a25a30cf3325d86"><div class="ttname"><a href="structipc_1_1util_1_1Native__handle.html#ab2f496740139c5752a25a30cf3325d86">ipc::util::Native_handle::m_native_handle</a></div><div class="ttdeci">handle_t m_native_handle</div><div class="ttdoc">The native handle (possibly equal to S_NULL_HANDLE), the exact payload of this Native_handle.</div><div class="ttdef"><b>Definition:</b> <a href="native__handle_8hpp_source.html#l00085">native_handle.hpp:85</a></div></div>
<div class="ttc" id="async__io_2detail_2native__socket__stream__impl_8hpp_html"><div class="ttname"><a href="sync__io_2detail_2native__socket__stream__impl_8hpp.html">native_socket_stream_impl.hpp</a></div></div>
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